| Term | Definition |
| heresy | n any belief that is strongly opposed to established beliefs |
| hermetic | a impervious to external influence ; airtight |
| heyday | n golden age ; prime prime |
| hiatus | n a break or interruption often from work ; |
| hierarchy | n an organization based on rank or degree ; pecking order |
| histrionic | a overly dramatic ; theatrical ; |
| homily | n a sermon |
| homogeneous | a uniform ; made entirely of one thing uniform |
| husbandry | n thrifty management of resources ; livestock farming |
| hyperbole | n an exaggeration used as a figure of speech ; exaggeration exaggeration |
| hypothetical | a uncertain ; unproven |
| iconoclast | n one who attacks popular beliefs or institutions |
| ideology | n a system of social or political ideas |
| idiosyncrasy | n a peculiarity ; an eccentricity |
| idyllic | a charming in a rustic way ; naturally peaceful |
| ignominy | n deep disgrace |
| illicit | a illegal ; not permitted |
| imminent | a just about to happen |
| immutable | a unchangeable |
| impartial | a fair ; not favoring one side or the other ; unbiased |
| impeccable | a flawless ; entirely without sin |
| Imperial` | a like an emperor or an empire |
| impervious | a not allowing anything to pass through ; impenetrable |
| impetuous | a impulsive ; extremely impatient ; |
| implement | v to carry out |
| impotent | a powerless ; helpless ; unable to perform sexual intercourse |
| impugn | v to attack especially to attack the truth or integrity of something |
| inane | a silly ; senseless |
| inaugurate | v to begin officially ; to induct formally into office |
| incandescent | a brilliant ; giving off heat or light |
| incantation | n a chant ; the repetition of statements or phrases in a way reminiscent of a chant |
| incense | a make very angry |
| incessant | a unceasing |
| incipient | a beginning ; emerging |
| incisive | a cutting right to the heart of the matter |
| incongruous | a not harmonious ; not consistent ; not appropriate not fitting in |
| incorrigible | a incapable of being reformed |
| increment | n an increase ; one in a series of increases |
| indifferent | a not caring one way or the other ; apathetic ; mediocre |
| indigenous | a native ; originating in that area |
| indigent | a poor |
| indignant | a angry especially as a result of something unjust or unworthy ; insulted |
| indolent | a lazy ; |
| indulgent | lenient ; yielding to desire |
| ineffable | a incapable of being expressed or described |
| inept | a clumsy ; incompetent ; gauche |
| inert | a inactive ; sluggish ; not reacting chemically |
| inexorable | a relentless ; inevitable ; unavoidable |
| infamous | a shamefully wicked ; having an extremely bad reputation ; disgraceful |
| infatuated | a foolish ; foolishly passionate or attracted ; made foolish ; foolishly in love |
| infer | v to conclude ; to deduce |
| infinitesimal | a very very very small ; infinitely small ; |
| ingenuous | a frank ; without deception ; simple ; artless ; charmingly na ve |
| inherent | a part of the essential nature of something ; intrinsic |
| injunction | n a command or order especially a court order |
| innate | a existing since birth ; inborn ; inherent |
| innocuous | a harmless ; banal |
| inordinate | a excessive ; unreasonable |
| insatiable | a hard or impossible to satisfy ; greedy ; avaricious |
| insidious | a treacherous ; sneaky ; |
| insinuate | v to hint ; to creep in hind |
| insipid | a dull ; bland ; banal |
| insolent | a arrogant ; insulting |
| instigate | v to provoke ; to stir up |
| insular | a like an island ; isolated |
| insurgent | n a rebel ; someone who revolts against a government |
| integral | a essential |
| intractable | a uncontrollable ; stubborn ; disobedient |
| intransigent | a uncompromising ; stubborn |
| intrinsic | a part of the essential nature of something ; inherent |
| introspective | a tending to think about oneself ; examining ones feelings |
| inundate | v to flood ; to cover completely with water ; to overwhelm |
| invective | n insulting or abusive speech |
| inveterate | a habitual ; firm in habit ; deeply rooted |
| irascible | a easily angered or provoked ; irritable |
| ironic | a meaning the opposite of what you seem to say ; using words to mean something other than what they seem to mean |
| irrevocable | a irreversible |
| itinerant | a moving from place to place |
| judicious | a exercising sound judgment |
| juxtapose | v to place side by side |
| kinetic | a having to do with motion ; lively ; active |