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Big List of Adjectives That Start With I (Positive, Negative, Descriptive)

Looking for adjectives that start with I? Adjectives help us to describe the world around. They can get used in a positive or negative way. And often help us to modify expressions and sentences to fit our desired point of view or perspective.

Let’s take a look at all the adjectives in the English language that begin with the letter “I.”

Adjectives that start with I
Adjectives that start with I

List of adjectives that start with I

  • Indicative – serving as a sign or indication of something
  • Indirect – not directly caused by or resulting from something.
  • Indisposed – in poor health
  • Indisputable – not up for debate, with absolute certainty
  • Inarguable – unable to be disputed 
  • Inevitable – something that will come to pass eventually against all odds 
  • Informal – friendly and casual way of interacting
  • Industrial – relating to an industry 
  • Ideographic – symbolic representations of concepts
  • Idiomatic – relating to colloquial expressions
  • Illiterate – unable to read or write.
  • Illustrious – a noteworthy person who is famous and revered
  • Interior – referring to the inner part of something 
  • Internal – existing or occurring inside an institution, for example 
  • Incidental – something that secondarily occurs along with something else 
  • Imaginary – a figment of the imagination or fictional 
  • Indefinable – something that cannot be defined by words
  • Indefinite – lasting for an unknown length of time
  • Indelicate – lacking sensitive understanding or being tactless
  • Indentured – binding someone by an indenture as an apprentice or laborer
  • Indeterminate – undefined or unspecified
  • Indian – relating to the South Asian country of India
  • Italian – relating to the European country of Italy
  • Interactional – having an influence on each other 
  • Investigative – associated with the process of investigation
  • Invisible – not able to be perceived by the eye 
  • Inherent – existing in something as a permanent, essential, or characteristic attribute
  • Inheritable – capable of being inherited
  • Inhibited – self-conscious or reserved
  • Inoffensive – unoffending or harmless
  • Inoperable – not able to be operated on or treated
  • Incontrovertible – beyond a shadow of a doubt 
  • Impregnable – a place or fortification which cannot be attacked or broken into
  • Inaudible – unable to be heard
  • Inbound traveling inwards towards a particular location, precisely an origin
  • Inbred – existing from birth
  • Indefeasible – something that cannot be annulled or overturned.
  • Informative – giving information that is of value or use 
  • Intercultural – refers to interacting elements between different cultures 
  • Implausible – unrealistic or debatable 
  • Ionic – relating to ions or Ionic architecture 
  • Instructive – enlightening and informative 
  • Impressionist – the 19th-century art movement
  • Impudent – disrespectful or cheeky
  • Impugnable subject to being discredited
  • Inadvertent – without intention, accidentally
  • Infinite – without limit, never-ending
  • Incomplete – something that is insufficient or not whole 
  • Ill-fated – unfortunate and unsuccessful 
  • Indistinct – not clearly defined
  • Individualized – custom-made for someone
  • Inebriated – drunk or intoxicated
  • Ingrained – something established and difficult to change
  • Ingratiating – intended to gain approval or favor, sycophantic.
  • Ingrown – something that grows into itself
  • Inharmonious – lacking harmony or discordant
Adjectives that start with I
Adjectives that start with I

Descriptive adjectives that start with I

  • Imbalanced – lacking balance or arrangement
  • Immune – resilient to the effects of something
  • Impaired – weakened or damaged
  • Impeded – obstruct or hinder
  • Infinitesimal – something extremely small which cannot be visibly measured 
  • Intended – something that is done purposely or deliberately 
  • Icelandic – a North Germanic language 
  • Ideological – related to a system of ideas and theories
  • Idiotic – foolish or witless
  • Idle – doing nothing
  • Itsy-bitsyused to refer to tiny things like objects or insects 
  • Immortal – the quality of being eternal or ageless 
  • Immobile – unable to move, lacking motion
  • Icebound – totally enshrined in ice 
  • Illegal – forbidden by law
  • Illegible – that which cannot be read clearly
  • Illicit – unlawful or banned
  • Illuminated – lit with bright lights
  • Illusive – deceptive
  • Illustrative serving as an example or explanation.
  • Infernal – Referring to hellish traits or that which resemble the underworld 
  • Intransigent – not willing to accept other’s perspectives 
  • Inclusive – involving everything or everyone, allowing space for the co-existence of many attributes
  • Impartial – Unbiased and showing no preference
  • Innate – Something that naturally exists inside someone or something
  • Inky – relating to the properties of ink 
  • Idolized – admire excessively
  • Idyllic – extremely happy and tranquil
  • Iffy – doubtful
  • Ignited – set on fire
  • Ignored – disregard purposely
  • Imprudent – acting recklessly without caring about the consequence 
  • Indecisive – not being able to make a precise decision
  • Indefatigable – someone who works relentlessly 
  • International – concerning activities between nations and across borders 
  • Incessant – continuing ceaselessly 
  • Insatiable – a voracious need or thirst that cannot be sated 
  • Inefficient – failing to meet the optimal productivity level
  • Intergalactic – concerned with or movement between two or more galaxies 
  • Impending – something threatening to happen
  • Infected – contaminated with harmful organisms
  • Inferior – lower in status or quality
  • Infrequent – occurring rarely
  • Inlaid – a technique used in sculpture-making to adorn objects with embedded pieces of other materials
  • Imperceptible – unnoticeable
  • Imperfect – having defects
  • Imploring – making a desperate appeal
  • Imposed – force on someone
  • Inborn – existing from birth
  • Inclined – a sloping surface
  • Inconsequential – trivial or unimportant
  • Indebted – owing money
  • Inert – unmoving
  • Imprisoned – put in prison
  • Impromptu – done without prior planning
  • Improvised – create or perform spontaneously
  • Impure – adulterated or mixed
  • Inactive – not engaging in any activity
Adjectives that start with I
Adjectives that start with I

Positive adjectives that start with I

  • Impassioned – exhibiting strong emotions or brimming with feelings 
  • Invaluable – priceless, something that is too precious for a value to be attached to it 
  • Illuminating – help in clarifying or explaining something.
  • Imaginative – having or showing creativity or inventiveness
  • Immaculate – spotless, pristine
  • Impeccable – of the highest standard, flawless
  • Impressive – inspiring admiration
  • Inexhaustible – something in abundance that never runs out
  • Iridescent – having a multicolored or rainbow-like appearance 
  • Instrumental – playing an important or vital role 
  • Incredible – unbelievable or impressive 
  • Improvable – having scope for improvement
  • Inarguable – something that cannot be disputed
  • Incorruptible – not prone to corruption, honest
  • Increasing – becoming greater or growing
  • Indestructible – something that cannot be destroyed
  • Indispensable – absolutely necessary
  • Indelible – something that cannot be erased 
  • Incandescent – glowing with heat 
  • Infallible – faultless and incapable of doing wrong 
  • Immense – massive or enormous 
  • Indivisible – unable to be divided or separated
  • Indomitable – impossible to subdue or defeat
  • Indulgent – being generous or lenient with someone
  • Industrious – hard-working
  • Inexpensive – cheap
  • Influential – having great power or influence
  • Intrepid – fearless or undaunted 
  • Inculpable – guiltfree, blameless
  • Inerrant – incapable of being incorrect
  • Intuitional – well-versed in prioritizing emotion or instinct over reason
  • Inventive – exhibiting creativity and originality 
  • Inquisitive – showing an interest in learning new things
  • Inseparable – unable to be separated or treated separately
  • Independent – operating without external control, self-sufficient 
  • Incentivizing – providing encouragement or an incentive 
  • Invigorating – bringing strength, health, and energy to something or someone 
  • Inspirational – something or someone that gives inspiration
  • Instant – right now
  • Instinctive – done instinctually and not consciously
  • Intact – not damaged or impaired in any way
  • Innovator – a pioneer or pathbreaker who paves the way for others 
  • Initiator – an individual or a thing that sets off something 
  • Invincible – too powerful to be beaten
  • Integrated – with various parts or aspects unified or linked
  • Interchangeable – able to be exchanged
  • Intrinsic – essential

Negative adjectives that start with I

  • Inadvisable – unwise
  • Inapplicable – not relevant
  • Inappropriate – unsuitable or unfitting
  • Inarticulate – unable to express oneself
  • Incredulous – disbelieving or unconvinced 
  • Incorrigible – beyond the hope for change or reformation
  • Incommunicable – something that cannot be described to others 
  • Immeasurable – too large to be measured
  • Immodest – lacking decency
  • Immovable – not able to be moved
  • Impassable – blocked or obstructed
  • Ichorous – a blood-coated fluid that oozes from the body 
  • Incapacitated – render motionless, overpowered, completely 
  • Incapable – lacking the ability to do something 
  • Insufferable – too much to bear or endure 
  • Improper – not meeting the accepted standards
  • Inaccessible – out of reach
  • Inaccurate – wrong or faulty
  • Inadequate – deficient or scanty
  • Inadmissible – unacceptable
  • Impish – wicked or devilish in nature 
  • Icy – having cold or ice-like properties 
  • Irresolute – showing hesitancy or uncertainty 
  • Implacable – not able to be pacified or appeased
  • Ill – unwell or in poor health 
  • Impossible – unable to happen or exist
  • Impractical – not sensible or realistic
  • Imprecise – vague or non-specific
  • Improbable – doubtful or debatable
  • Imbecilic – referring to the behavior of imbeciles or stupid people 
  • Impoverished – extremely poor or destitute 
  • Inane – senseless or silly 
  • Illusionary – relating to illusions or something that is deceptive in nature 
  • Inhospitable – unfriendly and uninviting, lacking warmth 
  • Impatient – easily irritated or annoyed
  • Impenetrable – impossible to pass through or enter
  • Impetuous – done quickly and thoughtlessly
  • Implosive – having a tendency to implode
  • Irregular – not having an even or uniform structure 
  • Irresponsible – careless or misguided behavior 
  • Incongruous – something that is out of place or not in harmony 
  • Inattentive – preoccupied or distracted
  • Incompetent – unskilled or unprofessional
  • Insecure – lacking confidence
  • Insignificant – trivial or unimportant
  • Insulting – disrespectful
  • Illogical – unreasonable or groundless
  • Immoral – unethical
  • Impassive – not displaying emotion
  • Impersonal – unprejudiced or unbiased
  • Insensitive – not considering others’ feelings
  • Insipid – tasteless or bland
  • Intolerant – not having tolerance for a view, belief or behavior that is different from one’s own
  • Irate – furious
  • Irreverent – lacking respect
  • Irritable – bad-tempered
  • Ineffectual – not giving the desired effect
  • Indecent – obscene or rude
  • Inflexible – not willing to change or compromise
  • Infuriating – extremely angry

Adjectives that start with I to describe a person

  • Incomparable – His mathematical prowess was incomparable to any of his contemporaries. 
  • Intriguing – A tip to becoming an intriguing person is to always have a book on hand. Knowledge never goes out of style. 
  • Idiosyncratic
  • Irrational – Modern parents are not irrational like old ones. They value their children’s happiness above all else. 
  • Involved – Even though he was dyslexic, he was always involved in the activities in the class with great zeal. 
  • Insincere – My best friend tends to come across as insincere because she has trouble opening up to people.
  • Ignorant – Sofia seemed ignorant at first glance, but she was a cunning schemer.
  • Insistent – The commanding officer was insistent that we report by 6 o’clock.
  • Insurrectional – The police initiated a crackdown on the insurrectional mob.
  • Intelligent – The frailty of genius is that no matter how intelligent you are, you will always desire the company to show off your intellect.
  • Intense – The fitness instructor was pretty intense to deal with – he asked beginners to do hardcore workouts on their first day.
  • Intersex – The author identified as an intersex person and has made a significant contribution to LGBTQ+ literature. 
  • Impactful – Mahatma Gandhi still remains to be an impactful leader whose lessons inspire millions of people around the world. 
  • Idealistic – I grew up reading romance novels which shaped me into an idealistic person who always has her head in the clouds. 
  • Interrogative – Our security guard takes his job too seriously and is thoroughly interrogative of anyone or anything that tries to get through our doors. 
  • Infantile – The rates affecting infantile diseases has significantly reduced due to the advent of medicine.
  • Infatuated – I’ve always been infatuated with the idea of never having a child and spending all my fortune on traveling around the world.
  • Immersive – The writer was famous for creating immersive characters that were rooted in reality and had the ability to pull you into their vividly fantastical worlds. 
  • Irresistible – I fell in love with her at first sight. She possessed an irresistible charm, and I was all too happy to give in. 
  • Impolite – Impolite students of today who are left unchecked turn into extremely rude adults. 
  • Indiscreet – Peter moved like a cat about to catch its prey: indiscreet and lithe.
  • Indiscriminate – The patient was admonished for his indiscriminate use of sleeping pills.
  • Individualistic – Western populations are characterized by individualistic goals, whereas Asian ones give priority to a collective lifestyle.
  • Ireful – The ireful persona of my father was enough to send my heart flying to my stomach. 
  • Imperial – Queen Elizabeth II lives on as an unforgettable personality among British imperial figures. 
  • Identical – She was blessed with identical triplets after waiting for years
  • Introspective
  • Individual – Every individual in the club was encouraged to voice out their opinions. 
  • Intimate – Emily Dickinson and her best friend Sue had an intimate friendship that was often speculated to be something more by literary experts. 
  • Impulsive – I’m quite impulsive when it comes to splurging on retail therapy after a bad day.
  • Improving – It’s okay if you fall down. What matters is that you get back up, try again and keep improving. 
  • Infamous – The CEO was infamous for money laundering and duping millions of his customers. 
  • Ingenious – The scientist came up with an ingenious test that could detect a rare type of cancer in babies.
  • Innovative – The founding father of the brand is hailed as an innovative pioneer in the field of Swiss haute horology.
  • Inquisitorial – Her chilly, inquisitorial voice scared the poor child.

Example sentences using adjectives that start with “I”

  • Aziraphale and Crowley from the hit drama Good Omens are lovingly called the “ineffable husbands” by fans because they are eccentric individuals with great chemistry. 
  • The insolent child refused to leave the supermarket until his mom bought him an expensive Spiderman suit. 
  • Sherlock Holmes’s intellectual and enigmatic persona is what has made him the most famous fictional detective in the world. 
  • She had an intricate eye for detail, which made her the best-skilled fashion designer in her field. 
  • The librarian loved her job and never ran out of recommendations to give to the children. They all thought she was the most interesting person in the school. 
  • The headmistress had an intimidating demeanor and an icy personality that was not to be trifled with. 
  • The mother felt indescribable joy to be holding the newborn in her arms. 
  • The three ignoble brothers had a rough upbringing and turned to thievery to feed themselves. 
  • In ancient times, there was nothing more inglorious than a woman who had a child out of wedlock. 
  • My father is driven by inductive reasoning rather than emotion, as he is a rational person.  
  • There was something abnormal about her angry outbursts. Her violently inciting and explosive episodes bordered on hysteria. 
  • Since I was a newbie at my job, I was made to deal with the most irritating customers who talked for hours on end. 
  • A good way to handle irksome students is by making them class monitors to instill a sense of responsibility in them. 
  • Public speaking is not a career where introverted people can thrive. They excel more in creative fields that require back-end jobs.  
  • Unlike my siblings, I am a sound sleeper who is luckily impervious to the loudest of noises.  
  • Children were rushed to the hospital after a local monkeypox outbreak with complaints of itchy skin and suspicious lesions.  
  • The criminal targeted impressionable teens and made them sell drugs by enticing them with lucrative promises.  
  • The old man was incoherent after the accident, even though he suffered no injuries. 
  • I have an outstanding work-life balance, and I rarely get stressed out. Both areas of my life are disconnected from each other, and I am indifferent to any external pressure. 
  • I tried to prove that I was innocent and had no hand in the domestic drama brewing in the family, but my parents still blamed me. 
  • The old man who lived at the edge of the hill seemed scary, but he was an innocuous beekeeper who loved handing out jars of honey to the kids. 
  • The intruder was inconspicuous and hid among the furniture in plain sight. 
  • I decided the only way to avoid my toxic ex-boyfriend was to lead an incognito existence and delete all my social media accounts.  
  • The police nabbed the convict based on his identifiable tattoos described by the witnesses. 
  • I wish I had the courage to tell my family I loved inspiring people and wanted to become a political leader but sadly, they wanted me to take over the family business. 
  • The psychiatrist who delivered a lecture to the university was highly insightful and raised awareness of the importance of mental health and preventing student suicides. 
  • After living in the woods for a week without showering, I was starting to feel icky.  
  • Illegal encroachment of land in the Andaman and Nicobar Islands has led to the loss of habitat for indigenous people and endangered tribes.
  • No one expected that the King’s illegitimate son would one day sit on the throne. 
  • The Korean supergroup BTS has emerged as an iconic and irrefutable example of Asian representation in mainstream pop culture of the 21st century.
  • My great-grandmother was soon becoming insane and constantly waking up due to her hallucinations. 

Adjectives that start with “I” (images)

Adjectives that start with I
Adjectives that start with I
Adjectives that start with I
Adjectives that start with I
Adjectives that start with I
Adjectives that start with I

Other adjective lists

Other lists of adjectives:


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About the author

Dalia Y.: Dalia is an English Major and linguistics expert with an additional degree in Psychology. Dalia has featured articles on Forbes, Inc, Fast Company, Grammarly, and many more. She covers English, ESL, and all things grammar on GrammarBrain.

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