| Term | Definition |
| infringe | violate (a law); encroach (the right of another person) |
| ingenious | marked by inventive skill; clever; resourceful; N. ingenuity |
| s resourceful | clever and imaginative (in dealing with difficult situations); N. resource, resourcefulness |
| ingenuous | naive and trusting; young; unsophisticated; candid |
| s ingenue | ing\'enue; young innocent girl |
| ingrained | deeply established; firmly rooted; Ex. ingrained dirt/prejudice |
| ingrate | ungrateful person (not expressing thanks) |
| n ingratiate | become popular with; bring (oneself) in favor of another; Ex. ingratiate himself with the boss |
| inherent | firmly established by nature or habit; intrinsic |
| inhibit | restrain; prohibit; retard or prevent; N. inhibition |
| s inhibited | (of a person) unable to express what one really feels |
| s uninhibited | having no inhibitions; free in behavior and feelings |
| n inimical | (of someone) unfriendly; hostile; (of something) harmful; detrimental; CF. enemy |
| inimitable | matchless; not able to be imitated |
| iniquitous | wicked; immoral; unrighteous; N. iniquity; Ex. den of iniquity; in- 'not' + aequus 'equal, just.' |
| initiate | begin; originate; receive into a group; introduce to a new field or activity; Ex. initiate someone into the mysteries of a secret religion; N: one who has been initiated |
| injurious | harmful; causing injury |
| n inkling | hint; slight indication |
| innate | inborn |
| innocuous | harmlessin- 'not' + nocuus 'injurious' (see nocuous ). CF Ocult |
| innovation | change; something newly introduced; introduction of something new; V. innovate: begin or introduce (something new); be creative; ADJ. innovative |
| n innuendo | indirect or subtle (derogatory) hint; insinuation; Ex. sexual innuendo |
| inopportune | untimely; inappropriate or ill-timed; poorly chosen |
| n inordinate | beyond reasonable limits; unrestrained; excessive; Ex. inordinate demands; CF - Graph, y-ordinate, X-ordinate. So beyond any ordinates |
| inquisitor | questioner (especially harsh); investigator; person making an inquisition |
| s inquisitive | eager for knowledge; unduly curious |
| n insalubrious | unwholesome; not healthful; Ex. insalubrious place |
| s healthful | conducive to good health; Ex. healthful mountain air |
| s healthy | possessing good health; healthful |
| s wholesome | conducive to mental or physical health; healthful |
| insatiable | not easily satisfied; unquenchable; Ex. insatiable appetite |
| n inscrutable | difficult to understand; impenetrable; not readily understood; mysterious |
| n insensate | without feeling; lacking sense; foolish |
| n insensible | unconscious; unresponsive; insensitive; unaware; imperceptible; Ex. insensible of his danger/to pain; Ex. insensible change; CF. not the opposite of sensible |
| n insidious | treacherous; stealthy; sly; working or spreading harmfully in a stealthy manner; Ex. insidious spreading of dry rot |
| insightful | discerning; perceptive |
| n insinuate | hint; imply; suggest indirectly; creep in; introduce or insert (oneself) by artful means; Ex. insinuate himself into the boss's favor; CF. ingratiate |
| s creep | move with body close to the ground; move stealthily or slowly; N. |
| s artful | exhibiting art or skill; deceitful; cunning; CF. artifice |
| n insipid | lacking in flavor; lacking interest; dull; Ex. insipid food/character |
| insolence | impudent disrespect; haughtiness; ADJ. insolent; CF. haughty + rude |
| insolvent | bankrupt; lacking money to pay; N. insolvency |
| insomnia | wakefulness; inability to sleep |
| n insouciant | without concern or care; unconcerned; indifferent |
| n instigate | start; urge; provoke; incite; Ex. instigate a search/quarrel |
| insubordination | disobedience; rebelliousness; ADJ. insubordinate |
| insubstantial | lacking substance; insignificant; frail; immaterial |
| n insularity | narrow-mindedness; isolation; ADJ. insular: of an island; isolated; narrow-minded; CF. peninsula |
| insuperable | insurmountable; unbeatable; Ex. insuperable difficulties |
| s odds | chances; probability; disagreement; Ex. The odds are that it will rain. Ex. at odds with |
| insurgent | rebellious; N. |
| insurmountable | overwhelming; unbeatable; insuperable |
| insurrection | rebellion; uprising |
| intangible | not able to be perceived by touch; vague |
| integral | complete; necessary for completeness; Ex. integral part |
| integrate | make whole; combine; make into one unit |
| integrity | honesty; uprightness; wholeness; state of being whole and undivided; completeness |
| s upright | (sitting or standing) straight up; honest; moral |
| intellect | higher mental powers; person of great intellectual ability |
| intelligentsia | intellectuals; members of the educated elite (often used derogatorily) |
| inter | bury; N. interment |
| s cemetery | place for burying the dead |
| interdict | prohibit; forbid; N. - interdicere 'interpose, forbid by decree,' from inter- 'between' + dicere 'say.' |
| interim | meantime; Ex. in the interim; ADJ. taking place during an interim; Ex. interim paper |
| n interloper | intruder; one who interferes |
| interminable | endless |
| intermittent | periodic; on and off; stopping and starting at intervals |
| internecine | mutually destructive CF - Word History Answers.com |
| n interpolate | insert between |
| n interregnum | period between two successive reigns or governments |
| n interrogate | question closely; cross-examine; cross-question |
| intervene | come between; interfere; Ex. intervened to prevent a fight; N. intervention |
| n intimate | hint; suggest; imply; ADJ: marked by close relationship; familiar; private; personal; Ex. intimate knowledge/thoughts in the diary; N: close friend or confidant; CF. intimacy |
| intimidate | frighten; N. intimidation |
| intractable | unruly; difficult to manage; Ex. intractable problem/child |
| intransigence | refusal of any compromise; stubbornness; ADJ. intransigent: uncompromising |
| intrepid | fearless |
| intrinsic | essential; inherent; built-in |
| n introspective | looking within oneself; N. introspection: self-examination |
| introvert | one who is introspective or inclined to think more about oneself; ADJ. introverted |
| n intrude | put or force in without being asked; trespass; enter as an uninvited person; Ex. intrude one's own opinion into the report; CF. thrust in |
| intuition | immediate insight; power of knowing without reasoning; ADJ. intuitive; V. intuit: know by intuition |
| inundate | flood; overflow; submerge; cover completely; Ex. inundated with work; in, unda, wave |
| s overwhelm | (of water) cover completely; defeat completely by much greater force; Ex. overwhelmed by grief |
| s submerge | place under water; dip; go under water; cover completely (as with water); Ex. submerged in work |
| s engulf | surround and swallow up |
| n inured | accustomed; hardened; Ex. inured to the Alaskan cold; V. inure: make used to something undesirable; harden; CF. unfeeling; in + use |
| invalidate | weaken; destroy; make invalid; nullify |
| s invalid | one incapacitated(disabled) by a chronic illness; ADJ: incapacitated by illness; not valid; null; V: allow to leave (a military force) because of ill-health |
| invective | abuse |
| n inveigh | denounce; utter censure or invective; Ex. inveigh against the evils of drink |
| n inveigle | deceive; lead astray by deception; wheedle(cajole); Ex. inveigle her into joining the club; CF. interest dishonestly; fooslana, fooslake bagel khilana |
| inverse | opposite |
| invert | turn upside down or inside out; reverse the position or condition of |