GRE Words Starting with I (153 words)

insipid

Unappetizingly flavorless.

The diners were disappointed with the plain, insipid soup they were served.

incredulous

(of a person or their manner) unwilling or unable to believe something.

She listened to his explanation with an incredulous smile.

ingenuous

(of a person or action) innocent and unsuspecting.

The word 'ingenuous' is commonly used in GRE vocabulary.

incendiary

Something capable of causing fire, particularly a weapon.

The word 'incendiary' is commonly used in GRE vocabulary.

inimical

tending to obstruct or harm.

forces inimical to democracy

intimate

A very close friend.

The word 'intimate' is commonly used in GRE vocabulary.

invigorate

give strength or energy to.

A brisk walk in the cool morning air always invigorates me.

imperious

arrogant and domineering.

an imperious manner/tone/gesture

impertinent

An impertinent individual.

an impertinent answer

invasive

tending to spread very quickly and undesirably or harmfully.

The word 'invasive' is commonly used in GRE vocabulary.

irresolute

showing or feeling hesitancy; uncertain.

irresolute legislators

immutable

unchanging over time or unable to be changed.

the immutable laws of nature

indefatigable

(of a person or their efforts) persisting tirelessly.

an indefatigable worker

indolent

Habitually lazy, procrastinating, or resistant to physical labor

The indolent girl resisted doing her homework.

insular

ignorant of or uninterested in cultures, ideas, or peoples outside one's own experience.

an insular [= isolated ] group

intransigent

unwilling or refusing to change one's views or to agree about something.

intransigent in their opposition

intrepid

fearless; adventurous (often used for rhetorical or humorous effect).

an intrepid explorer

irreverent

showing a lack of respect for people or things that are generally taken seriously.

He has a delightfully irreverent sense of humor.

indiscriminate

done at random or without careful judgement.

indiscriminate reading habits

innocuous

not harmful or offensive.

He told a few innocuous jokes.

impede

delay or prevent (someone or something) by obstructing them; hinder.

He claims that economic growth is being impeded by government regulations.

impetuous

acting or done quickly and without thought or care.

an impetuous temperament

irascible

having or showing a tendency to be easily angered.

an irascible old football coach

indispensable

absolutely necessary.

an indispensable member of the staff

incongruous

not in harmony or keeping with the surroundings or other aspects of something.

The word 'incongruous' is commonly used in GRE vocabulary.

interchangeable

Anything that can be interchanged; a substitute.

These words have similar meanings but they're not (freely) interchangeable (with each other).

illusory

based on illusion; not real.

Enron's profits were all illusory.

invidious

Causing ill will, envy, or offense.

invidious remarks

inborn

existing from birth.

Humans have the inborn [= innate ] ability to adapt.

iconoclastic

criticizing or attacking cherished beliefs or institutions.

The word 'iconoclastic' is commonly used in GRE vocabulary.

Browse by Letter