442 Nouns That Start with I | Best List with Definitions and Examples

Have you an iconic idea of writing a new novel with the help of nouns that start with I? Reading is a journey of incessant improvement for which people have strived for centuries.

As you glance through the pages in your next novel, see how many nouns starting with I are there to intellectualize you. It won’t be a difficult job, as the letter I is among the most frequently used letter in English language.

The letter I is definitely one of the prominent and coolest on the alphabet block. We’ve carefully curated a long list of nouns that start with I for you to use them frequently in sentences and paragraphs when it comes to describe a place, thing, person, feeling, or whatever in your mind.

The nouns that start with I can do a whole lot more than ignition and imagination. It can also be incorporated in your next piece of writing and speech.

With the help of nouns beginning with I to describe a person in your back pocket, you can build a nice vocabulary to describe personalities.

Nouns That Start with I You Always Use

In English Language, there is an interesting bunch of most commonly used nouns that start with I for describing people, places, things or ideas. Let’s stroll down through a list of some common nouns:

1. Idea

Definition: a suggestion or plan for doing something
Synonyms: plan, design, scheme
Example: I’ve had an idea – why don’t we go to the coast?

2. Irregularity

Definition: the quality of not being regular in shape or form, or an example of this
Synonyms: bump, lump, bulge
Example: The west of the island is famous for the irregularity of its coastline.

3. Identity

Definition: who a person is, or the qualities of a person or group that make them different from others

Synonyms: name, specification, recognition
Example: The man’s identity was being kept secret while he was helping police with enquiries.

4. Illness

Definition: a disease of the body or mind
Synonyms: sickness, disease, ailment
Example: Many people suffer from some form of mental illness during their lives.

5. Image

Definition: a picture in your mind or an idea of how someone or something is
Synonyms: picture, figure, portrait
Example: I had an image of Texas in my head that was totally different from how it really is.

6. Impact

Definition: the force or action of one object hitting another
Synonyms: crash, bump, smash
Example: The impact of the crash reduced the car to a third of its original length.

7. Importance

Definition: the quality of being important
Synonyms: significance, value, influence
Example: The health report stresses the importance of fresh food in a diet.

8. Import

Definition: goods bought by one country from another

Synonyms: imported commodity, foreign commodity
Example: The country imposed restrictions on foreign imports.

9. Inactivity

Definition: the state of doing nothing
Synonyms: idleness, laziness, lethargy
Example: Inactivity contributes to weakness, fatigue and sleeplessness.

10. Inaccuracy

Definition: a situation in which a fact or measurement is not completely correct or exact
Synonyms: error, mistake, fault
Example: The film is full of historical inaccuracies.

Nouns That Start with I You Usually Use

If you want to be a confident English speaker or writer, you should be in possession of a well-stocked vocabulary of frequently used nouns starting with I. Let’s dive in the ocean of nouns and pluck some common nouns in the below list:

1. Inability

Definition: lack of ability to do something
Synonyms: incapacity, helplessness, powerlessness
Example: Inability to use a computer is a serious disadvantage when you are applying for jobs.

2. Incident

Definition: an event that is either unpleasant or unusual
Synonyms: event, occurrence, occasion
Example: A youth was seriously injured in a shooting incident on Saturday night.

3. Incentive

Definition: something that encourages a person to do something
Synonyms: inducement, motivation, stimulant
Example: Tax incentives have been very effective in encouraging people to save and invest more of their income.

4. Income

Definition: money that is earned from doing work or received from investments
Synonyms: earning, salary, pay
Example: Average incomes have risen by 4.5 percent over the past year.

5. Increase

Definition: a rise in the amount or size of something
Synonyms: rise, growth, expansion

Example: Any increase in production would be helpful.

6. Inconvenience

Definition: a state or an example of problems or trouble, often causing a delay or loss of comfort
Synonyms: trouble, problem, difficulty
Example: We apologize for any inconvenience caused by the late arrival of the train.

7. Indicator

Definition: something that shows what a situation is like
Synonyms: measure, guage, signal
Example: Commodity prices can be a useful indicator of inflation, he claimed.

8. Induction

Definition: an occasion when someone is formally introduced into a new job or organization, especially through a special ceremony
Synonyms: introduction, installation, entrance
Example: Her induction as councillor took place in the town hall.

9. Industry

Definition: the companies and activities involved in the process of producing goods for sale, especially in a factory or special area
Synonyms: manufacturing, production
Example: The strike seriously reduced coal deliveries to industry.

10. Individual

Definition: a single person or thing, especially when compared to the group or set to which they belong
Synonyms: lone, single, separate

Example: Every individual has rights which must never be taken away.

Nouns That Start with I You Often Use

There are many common nouns beginning with I in English language to spark new ideas for your speech or new writing project. Let’s have a look at the list of some frequently used nouns that begin with the letter I:

1. Inefficiency

Definition: a lack of organization or skill that wastes time, energy, money, etc., or methods or actions that waste time, etc. in this way
Synonyms: inability, incapability, incompetency
Example: They were accused of gross inefficiency in their handling of the case.

2. Infant

Definition: a baby or a very young child
Synonyms: baby, newborn, a little one
Example: He showed us a picture of his infant daughter.

3. Infection

Definition: a condition in which bacteria or viruses that cause disease have entered the body
Synonyms: contamination, poison, inflammation
Example: Bandage the wound to reduce the risk of infection.

4. Influence

Definition: the power to have an effect on people or things, or a person or thing that is able to do this
Synonyms: effect, impact, control
Example: He has a huge amount of influence over the city council.

5. Ingredient

Definition: a food that is used with other foods in the preparation of a particular dish

Synonyms: constituent, component, element
Example: The list of ingredients included 250 g of almonds.

6. Irrigation

Definition: the practice of supplying land with water so that crops and plants will grow
Synonyms: sprinkling, watering, fertilization
Example: Hundreds of wells that provide irrigation to farmers have been shut down.

7. Information

Definition: facts about a situation, person, event, etc
Synonyms: details, particulars, facts
Example: I read an interesting piece of information in the newspaper.

8. Initiative

Definition: a new plan or process to achieve something or solve a problem
Synonyms: inventiveness, capability, ingenuity
Example: The peace initiative was welcomed by both sides.

9. Injection

Definition: the act of putting a liquid, especially a drug, into a person’s body using a needle and a syringe
Synonyms: vaccination, inoculation, immunization
Example: Daily insulin injections are necessary for some diabetics.

10. Injury

Definition: physical harm or damage to someone’s body caused by an accident or an attack

Synonyms: wound, bruise, cut
Example: Several train passengers received serious injuries in the crash.

Nouns That Start with I You Sometimes Use

The sometimes used nouns are equally important to mastering English skills. Together, we’ll stroll down through an interesting bunch of nouns that start with the letter I that you may even pick up for your next speech or writing project.

1. Ink

Definition: coloured liquid used for writing, printing, and drawing
Synonyms: liquid, magnetic ink
Example: The book is printed in three different coloured inks.

2. Innocence

Definition: the fact that someone is not guilty of a crime
Synonyms: inoffensiveness, purity, guiltlessness

Example: She pleaded her innocence, but no one believed her.

3. Inn

Definition: a hotel, esp. a small hotel, often with a restaurant
Synonyms: hotel, pub, guest house
Example: The inn was intended as a place for the accommodation of travelling gentlemen, not the use of the village residents.

4. Inquiry

Definition: the process of asking a question
Synonyms: question, investigation, examination
Example: Inquiry into the matter is pointless – no one will tell you anything.

5. Insect

Definition: a type of very small animal with six legs, a body divided into three parts and usually two pairs of wings, or, more generally, any similar very small animal
Synonyms: bee, pest, fly
Example: I’ve got some sort of insect bite on my leg.

6. Input

Definition: something such as energy, money, or information that is put into a system, organization, or machine so that it can operate

Synonyms: feed in, enter, insert
Example: The city plans to get input from local community groups.

7. Insecurity

Definition: a feeling of lacking confidence and not being sure of your own abilities or of whether people like you
Synonyms: self-doubt, diffidence, uncertainty

Example: His insecurity has kept him from having the success he deserves.

8. Inspection

Definition: the act of looking at something carefully, or an official visit to a building or organization to check that everything is correct and legal
Synonyms: examination, check, survey
Example: Her passport seemed legitimate, but on closer inspection, it was found to have been altered.

9. Instability

Definition: uncertainty caused by the possibility of a sudden change in the present situation
Synonyms: unreliability, uncertainty, insecurity
Example: The building’s instability makes it extremely dangerous.

10. Institution

Definition: a large and important organization, such as a university or bank
Synonyms: organization, establishment, foundation
Example: Harvard University is an internationally respected institution.

Nouns That Start with I You Occasionally Use

If you’re a beginner English learner, learn and memorize the occasionally used nouns and see what jumps out at you in the list of nouns with letter I. We have jot down few of them for you in the following list:

1. Installation

Definition: an occasion when equipment, furniture, or a computer program is put into position or made ready to use
Synonyms: installing, fitting, attachment
Example: Do you have to pay extra for installation?

2. Inspiration

Definition: someone or something that gives you ideas for doing something
Synonyms: creativity, innovation, ingenuity
Example: He went to church, perhaps seeking divine inspiration.

3. Instruction

Definition: something that someone tells you to do
Synonyms: order, command, direction
Example: He gave me strict instructions to get there by eight o’clock.

4. Instrument

Definition: an object, such as a piano, guitar, or drum, that is played to produce musical sounds
Synonyms: tool, device, apparatus
Example: Which instrument do you play?

5. Insult

Definition: an offensive remark or action
Synonyms: jibe, affront, snub
Example: She made several insults about my appearance.

6. Insurance

Definition: an agreement in which you pay a company money and they pay your costs if you have an accident, injury, etc
Synonyms: indemnity, security, cover
Example: The insurance doesn’t cover you for household items.

7. Intake

Definition: an act of taking in something, especially breath
Synonyms: consumption, eating, inhalation
Example: I heard a sharp intake of breath behind me.

8. Integrity

Definition: the quality of being honest and having strong moral principles that you refuse to change
Synonyms: honesty, uprightness, honor
Example: No one doubted that the president was a man of the highest integrity.

9. Interest

Definition: the feeling of wanting to give your attention to something or of wanting to be involved with and to discover more about something
Synonyms: attentiveness, heed, regard
Example: He never seems to show any interest in his children.

10. Interview

Definition: a meeting in which someone asks you questions to see if you are suitable for a job or course
Synonyms: meeting, evaluation, discussion
Example: I had an interview for a job with a publisher.

Nouns That Start with I You Seldom Use

There are some weird and rare noun words that start with I which put you at an edge when used in day-to-day conversation or writing. Let’s review some rare noun words starting with I in the below list:

1. Ideology

Definition: a set of beliefs or principles, especially one on which a political system, party, or organization is based
Synonyms: belief, ideas, doctrine
Example: The people are caught between two opposing ideologies.

2. Intelligence

Definition: the ability to learn, understand, and make judgments or have opinions that are based on reason
Synonyms: intellect, mind, comprehension
Example: I can’t believe that someone of his intelligence can read such trash!

3. Intent

Definition: the fact that you want and plan to do something
Synonyms: aim, purpose, intention
Example: I spent half the morning on the phone, which wasn’t really my intent.

4. Interaction

Definition: an occasion when two or more people or things communicate with or react to each other
Synonyms: relation, contact, association
Example: There’s not enough interaction between the management and the workers.

5. Interim

Definition: in the time between two particular periods or events
Synonyms: meantime, meanwhile, interval
Example: The new secretary starts in June, but in the interim we’re having to type our own letters.

6. Interference

Definition: an occasion when someone tries to interfere in a situation
Synonyms: intrusion, intervention, involvement
Example: She seems to regard any advice or help from me as interference.

7. Interpretation

Definition: an explanation or opinion of what something means
Synonyms: explanation, elucidation, exposition
Example: The dispute is based on two widely differing interpretations of the law.

8. Interrogation

Definition: a process of asking someone a lot of questions for a long time in order to get information, sometimes using threats or violence
Synonyms: questioning, probing, investigation
Example: One by one they were taken for interrogation.

9. Interval

Definition: a period between two events or times
Synonyms: intermission, break, recess
Example: We see each other at regular intervals – usually about once a month.

10. Intrusion

Definition: an occasion when someone goes into a place or situation where they are not wanted or expected to be
Synonyms: encroachment, imposition
Example: His phone call was a welcome intrusion into an otherwise tedious morning.

Positive Nouns That Start with I

It’s no secret that the more we inject our lives with positivity, the more it’ll bolster our personal and professional interactions with the people around us. Let’s take a glance over a list of few positive nouns that start with I:

1. Introduction

Definition: an occasion when something is put into use or brought to a place for the first time
Synonyms: establishment, initiation, launch
Example: The introduction of new working practices has dramatically improved productivity.

2. Invention

Definition: something that has never been made before, or the process of creating something that has never been made before
Synonyms: origination, creation
Example: The world changed rapidly after the invention of the phone.

3. Investment

Definition: the act of putting money, effort, time, etc. into something to make a profit or get an advantage, or the money, effort, time, etc. used to do this
Synonyms: investing, funding, stake
Example: The government wanted an inflow of foreign investment.

4. Invitation

Definition: the act of inviting someone to go to an event
Synonyms: request, call, invite
Example: Thanks for the invitation to your birthday party.

5. Issuance

Definition: the act of supplying an official document, especially a financial product
Synonyms: supplying, provision
Example: He left the country this summer after the issuance of arrest warrants for him and his deputies.

6. Improvement

Definition: an occasion when something gets better or when you make it better
Synonyms: advance, development, enhancement
Example: He’s been having treatment for two months now without any improvement.

7. Independence

Definition: freedom from being governed or ruled by another country
Synonyms: self-government, self-rule
Example: Mexico gained its independence from Spain in 1821.

8. Idol

Definition: someone who is admired and respected very much
Synonyms: hero, star, celebrity
Example: The Hollywood film idols of the 1940s were glamorous figures, adored by millions.

9. Integral

Definition: a number or function that gives the area under a curve on a graph between two points
Synonyms: integrate, integration
Example: The process of finding integrals is called integration.

10. Intimate

Definition: a close friend
Synonyms: best friend, buddy
Example: George was never one of the president’s intimates.

Nouns That Start with I to Describe a Person

We have a lot of unique people around us with a different character, appearance, personality and we need some descriptive I nouns to describe them. Let’s review some nouns that start with I to describe a person here:

1. Immigrant

Definition: a person who has come to a different country in order to live there permanently
Synonyms: newcomer, settler, incomer
Example: Illegal immigrants are sent back across the border if they are caught.

2. Innovator

Definition: someone who introduces changes and new ideas
Synonyms: pioneer, developer, inventor
Example: She has won a reputation as a leading innovator in the industry.

3. Inheritor

Definition: a person who has been given something by someone who is dead
Synonyms: heir, successor, reciever
Example: We are the inheritors of Greek and Roman culture.

4. Invitee

Definition: a person who is invited to something
Synonyms: caller, visitor, guest
Example: Not all invitees attended both meetings.

5. Ideal

Definition: a principle or a way of behaving that is of a very high standard
Synonyms: perfection, paragon, epitome
Example: We are committed to the ideal of equality.

6. Ill

Definition: a problem
Synonyms: trouble, difficulty, pain
Example: There seems to be no cure for the country’s economic ills.

7. Interpreter

Definition: someone whose job is to change what someone else is saying into another language
Synonyms: translator, presenter, performer
Example: She works as an interpreter in Brussels.

8. Insane

Definition: mentally ill people
Synonyms: crazy people
Example: It’s a hospital for the criminally insane.

9. Intellectual

Definition: a very educated person whose interests are studying and other activities that involve careful thinking and mental effort
Synonyms: bookworm, academic, highbrow
Example: She was too much of an intellectual to find popular movies interesting.

10. Instructor

Definition: a person whose job is to teach people a practical skill
Synonyms: teacher, trainer
Example: Mike is a fitness instructor.

Nouns That Start with I – Full List (442 Words)

In English writing, a good piece of writing can fail miserably to convey the message to the people, if the nouns are not properly used .Let’s roll up our sleeves and explore some useful nouns in a list of nouns that start with I:

Indefinity
Impromptu
Infliction
Insult
Individual
Inactivity
Imperialism
Invigoration
Implementation
Incomprehension
Irregular
Incipience
Inheritance
Incipiency
Insecticide
Intrusion
Infamy
Insect
Imagination
Irrigation
Imputation
Interviewee
Industralization
Impact
Illiteracy
Imitation
Inadvertence
Illegal
Individualism
Ingratitoode
Idiocy
Imminence
Integration
Irresolution
Industrialist
Injustice
Instructor
Importance
Inquiry
Intercourse
Implant
Instability
Institutionalization
Intimidation
Incantation
Immunization
Injury
Intolerance
Infinitive
Impairment
Inheritor
Idea
Immigration
Inclination
Irradiation
Indivisibility
Insolence
Intent
Immersion
Inventory
Independence
Intransigence
Irony
Indigation
Importation
Innovator
Interpretor
Indoctrination
Implement
Ingenuity
Intern
Instant
Interchange
Idealism
Individuation
Infantryman
Inhabitation
Idealization
Imagery
Intensifier
Insistence
Iceberg
Indivisible
Inducement
Ink
Industry
Imbecile
Investigator
Ingratitude
Inhibition
Impatience
Ileum
Individualist
Infinite
Imposition
Institution
Insane
Impossibility
Institute
Ill
Imbalance
Intensification
Incorruptibility
Illustration
Ire
Intelligentsia
Interpolation
Infusion
Insouciance
Intrigue
Indium
Instinct
Irritability
Impotency
Interface
Infantrymen
Intuition
Issuance
Intelligence
Interaction
Infantry
Intereference
Itinerary
Interval
Interrelationship
Import
Impurity
Inclusion
Insubordination
Industrialism
Interferometer
Invalid
Inertia
Irritant
Inculcation
Income
Interceptor
Innuendo
Impartiality
Investigation
Imprimatur
Intellectual
Impotence
Insight
Infection
Intendant
Ice
Infiltration
Infraction
Infestation
Impudence
Indemnity
Interment
Interrogation
Infancy
Influx
Inauguration
Interne
Infringement
Iconoclasm
Irreverence
Intake
Ideologist
Irrationality
Increase
Incompatibility
Impresser
Intervention
Ity
Iodoprotein
Interposition
Infant
Isolationism
Inpost
Invention
Idealist
Introduction
Infatuation
Incline
Interest
Index
Indisposition
Iodine
Interview
Integer
Industrialization
Infarct
Insemination
Incinerator
Idolizer
Immediacy
Influenza
Ind
Improvisation
Infarction
Imagineer
Individuality
Inflow
Instillation
Intersection
Informant
Immobility
Irregularity
Icon
Invasion
Inflammation
Inevitability
Impediment
Invader
Inside
Indication
Input
Insomnia
Ivory
Inventor
Imitator
Indecision
Inverse
Impunity
Inn
International
Imperfection
Intermarriage
Initiative
Intima
Invitation
Inlet
Implication
Inflection
Indifference
Ibex
Infrared
Isolation
Idyll
Insurance
Insulation
Indigestion
Indictment
Inaccuracy
Influence
Ivy
Inamorata
Impiety
Intonation
Innocence
Incubi
Insertion
Irresponsibility
Introspection
Idol
Interpretation
Intimacy
Ideal
Inexperience
Injunction
Instrumentation
Initiator
Intermission
Icicle
Inamorato
Inmate
Irredentism
Investor
Immensity
Illness
Inhibitor
Ibis
Iguana
Incapacity
Item
Ideology
Infuriation
Inactivation
Informality
Interrelation
Inversion
Inflation
Insanity
Integral
Inference
Instance
Inspector
Ignition
Idolatry
Idleness
Inadequacy
Incursion
Inaugural
Instruction
Inconvenience
Insert
Invulnerability
Inquisitor
Injection
Irreproducibility
Institutor
Invalidism
Illumination
Iridium
Installment
Iron
Instancy
Imperative
Interregnum
Impropriety
Impulse
Infirmary
Identification
Immunity
Inch
Immortality
Improviser
Invitee
Interlude
Inhalation
Inefficiency
Infidelity
Iota
Indefinite
Interrogator
Identity
Intellect
Inception
Inspiration
Incompetence
Interference
Integrity
Icecap
Introject
Instrument
Inceptor
Involution
Intestine
Ingestion
Interlocutor
Immaturity
Interior
Idiom
Infinity
Impression
Issue
Inset
Intimate
Inconsistency
Initiation
Invite
Involvement
Indolence
Independent
Imprisonment
Illegitimacy
Indicator
Impasse
Indirection
Indenture
Island
Inscription
Illusion
Igloo
Idler
Inaction
Inscrutability
Ingredient
Imbroglio
Ion
Insinuation
Incitement
Instigator
Invocation
Intemperance
Intensity
Incredulity
Infield
Imperialist
Intention
Icebox
Imperfectability
Incentive
Impresario
Itemization
Incarnation
Irsac

Idiot
Insignificance
Intercept
Itch
Illustrator
Incense
Interviewer
Irish
Incorporation
Ignorance
Insulin
Iodide
Inquest
Immodesty
Impressionist
Impersonation
Inability
Isle
Installation
Insularity
Interdependence
Inferno
Insurgence
Insurrection
Iodoamino
Isocyanate
Infirmity
Inviolability
Interpreter
Indulgence

Image
Incubation
Interplay
Inferiority
Incidence
Incident
Induction
Imagnation
Influent
Inspection
Investment
Information
Intellectuality
Indignation
Insecurity
Incongruity
Iodination
Innovation
Immorality
Instigation
Interruption
Immigrant
Intruder
Inequality
Interim
Ionosphere
Inoculation
Irritation
Insulator
Improvement

Final Thoughts on Nouns That Start with I

Quite some English learners may struggle with writing and speaking English. Using proper grammar, spelling, writing and speaking can seem like an impossibly daunting task for them. That’s why practicing the nouns that start with I can be incredibly useful and productive.

The list of nouns beginning with I might seem totally out of your wheelhouse, but may lead you to something good that you can incorporate into your next writing or speech project.

If you’re ambitious to be a creative writer, nouns starting with I may help you hone the requisite skills. They may also help you boost your vocabulary and provide new words for your everyday speech that can also impress your audience during presentations. We hope so you will find this collection of nouns that start with I useful for a number of occasions.