| Term | Definition |
| n inchoate | (of desire, wish, plan) recently begun; not explicit; at the beginning of development; rudimentary; elementary; Ex. inchoate mass |
| incidence | rate of occurrence; particular occurrence; Ex. high incidence of infant mortality |
| incidental | not essential; minor; N: something incidental |
| s incident | event; event that causes a crisis |
| s incinerate | burn to ashes |
| incipient | beginning; in an early stage |
| incisive | (appreciatively) cutting; sharp; Ex. incisive remarks; V. incise: make a cut into |
| incite | arouse to action; goad; motivate; induce to exist; Ex. incite a riot/the crowd to rebellion |
| n inclement | stormy; unkind; unmerciful; CF. clement |
| incline | slope; slant; Ex. steep incline |
| inclined | tending or leaning toward; bent; V. incline: slant; dispose; be disposed; tend |
| s tend | have a tendency; take care of; minister; serve at; apply one's attention; attend |
| inclusive | tending to include all; all-inclusive; Ex. inclusive charge |
| incognito | with identity concealed; using an assumed name; ADJ. |
| incoherent | unintelligible; muddled; unable to express one's thoughts in an orderly manner; illogical; lacking cohesion; not coherent |
| incommodious | not spacious; inconvenient |
| incompatible | inharmonious; N. incompatibility |
| incongruity | lack of harmony; absurdity; ADJ. incongruous: lacking in harmony; inappropriate |
| s attire | clothe; N: clothing; array; apparel |
| inconsequential | insignificant; unimportant |
| inconsistency | state of being self-contradictory; lack of uniformity or steadiness; ADJ. inconsistent: displaying a lack of consistency; erratic; contradictory; incompatible |
| incontinent | lacking self-restraint; not continent; licentious |
| incontrovertible | indisputable; impossible to dispute; not open to question; unquestionable |
| incorporate | introduce something into a larger whole; include; embody; give material form to; ADJ. |
| n incorporeal | without a material body; insubstantial |
| incorrigible | uncorrectable |
| incredulity | tendency to disbelief |
| incredulous | withholding belief; skeptical; showing disbelief |
| increment | increase |
| incriminate | accuse of or implicate in a crime; serve as evidence against; cause to seem or make guilty of a crime; Ex. incriminating evidence |
| n incrustation | hard coating or crust; V. incrust: encrust; cover with a crust |
| incubate | hatch; warm (eggs) with the body to promote hatching; maintain at optimal environment conditions for development; be holding in one's body an infection which is going to develop into a disease; N. incubation; CF. incubation:disease |
| s inasmuch_as | since; owing to the fact that |
| incubus | burden; very worriying problem; mental care; nightmare; male devil; CF. succubus |
| inculcate | teach (ideas or principles); instill |
| incumbent | obligatory; imposed as an obligation; currently holding an office; N: person who holds an office |
| incur | bring upon oneself |
| incursion | temporary invasion; CF. excursion: short journey |
| indefatigable | tireless; untiring; showing no sign of getting tired |
| indelible | not able to be erased |
| n indemnify | make secure against damage or loss; compensate for damage or loss; CF. make uninjured |
| indentation | notch; deep recess; V. indent; CF. tooth |
| n indenture | bind as servant or apprentice to master; bind by indenture; N: contract binding one party into the service of another for a specified time (as between an apprentice and his master) |
| indeterminate | uncertain; not clearly fixed; indefinite |
| indicative | suggestive; implying; serving to indicate |
| indices | signs; indications; Ex. indices of a student's potential; CF. index: something that reveals or indicates; sign; Ex. cost-of-living index |
| indict | charge; N. indictment |
| indifferent | unmoved or unconcerned by; having no interest in; mediocre; neither good nor bad |
| indigence | poverty |
| indigenous | native; Ex. plant indigenous to the New World |
| indigent | poor; destitute |
| indignation | anger at an injustice; Ex. righteous indignation; ADJ. indignant |
| s righteous | morally upright; just |
| s rightful | legally correct; Ex. rightful owner |
| indignity | treatment or situation that causes shame or loss of dignity, respect; offensive or insulting treatment; humiliating or degrading treatment; Ex. I suffered the indignity of having to say that in front of them. |
| indiscriminate | choosing at random; confused; not based on careful distinctions |
| indisputable | too certain to be disputed; beyond doubt |
| indissoluble | permanent; impossible to dissolve or disintegrate |
| indite | write; compose |
| indolent | lazy |
| indomitable | unconquerable; unyielding |
| n indubitable | unable to be doubted; which cannot be doubted; unquestionable |
| induce | persuade; lead to do something; bring about; N. inducement |
| inductive | pertaining to induction or proceeding from the specific to the general |
| s induct | place formally in office; install; admit as a member; initiate; N. induction: inducting; process of deriving general principles from particular facts; cf induction program at offices, orientation at colleges |
| indulgent | humoring; yielding; lenient; showing indulgence |
| s indulge | yield to; gratify; allow oneself a special pleasure; Ex. indulge one's every whim/a child/in a big cigarette; N. indulgence |
| s humor | indulge; comply with the wishes of; N. quality that makes something amusing; state of mind; mood; Ex. in a bad humor; Ex. out of humor |
| industrious | diligent; hard-working; N. industry |
| n inebriated | habitually intoxicated; drunk; N. inebriety |
| s inebriate | make drunk; intoxicate; N. intoxicated person |
| s intoxicate | make drunk; stimulate or excite; Ex. intoxicated by all the money he might win |
| n ineffable | unutterable; not to be uttered; taboo; that cannot be expressed in speech; indescribable; unspeakable; inexpressible; Ex. ineffable name/joy |
| ineffectual | not effective; not having a desired effect; weak |
| n ineluctable | irresistible; not to be escaped; unavoidable |
| inept | unsuited; inappropriate; lacking skill; incompetent; CF. inapt: (of statements or ideas) inappropriate |
| inequity | unfairness; ADJ. inequitable |
| n inerrancy | infallibility |
| n inert | inactive; lacking power to move; unable to move or act; Ex. chemically inert; N. inertia: state of being inert; force which keeps a thing in the position or state |
| inevitable | unavoidable |
| n inexorable | relentless; unyielding; implacable; not capable of being changed by entreaty or efforts; Ex. inexorable price rises |
| infallible | unerring; never making mistakes |
| infamous | notoriously bad; notorious; well known for being bad; Ex. infamous behavior; N: infamy: infamous act; evil fame or reputation |
| infantile | childish; infantlike |
| infer | deduce; conclude; N. inference |
| n infernal | pertaining to hell; devilish; N. inferno: place of fiery heat or destruction |
| n infidel | unbeliever (with respect to a particular religion) |
| infiltrate | pass into or through; penetrate or enter (an organization) sneakily; Ex. infiltrate the troops into enemy territory; CF. infiltrator |
| s penetrate | enter into; pierce; permeate; see through; grasp the inner significance of; understand |
| infinitesimal | very small |
| infirmity | weakness |
| inflated | exaggerated; pompous; enlarged (with air or gas) |
| influx | flowing into CF. flux |
| infraction | violation (of a rule or regulation); breach; Latin fractio(n-) 'breaking (bread),' from Latin frangere 'to break.' • a dissenting group within a larger one. |