SAT Vocabulary Page 15

• impropriety n. The state or quality of being unfit, unseemly, or inappropriate.
• improvident adj. Lacking foresight or thrift.
• improvise v. To do anything extemporaneously or offhand.
• imprudent adj. Heedless.
• impudence n. Insolent disrespect.
• impugn v. To assail with arguments, insinuations, or accusations.
• impulsion n. Impetus.
• impulsive adj. Unpremeditated.
• impunity n. Freedom from punishment.
• impure adj. Tainted.
• impute v. To attribute.
• inaccessible adj. Difficult of approach.
• inaccurate adj. Not exactly according to the facts.
• inactive adj. Inert.
• inadequate adj. Insufficient.
• inadmissible adj. Not to be approved, considered, or allowed, as testimony.
• inadvertent adj. Accidental.
• inadvisable adj. Unadvisable.
• inane adj. Silly.
• inanimate adj. Destitute of animal life.
• inapprehensible adj. Not to be understood.
• inapt adj. Awkward or slow.
• inarticulate adj. Speechless.
• inaudible adj. That can not be heard.
• inborn adj. Implanted by nature.
• inbred adj. Innate.
• incandescence n. The state of being white or glowing with heat.
• incandescent adj. White or glowing with heat.
• incapacitate v. To deprive of power, capacity, competency, or qualification.
• incapacity n. Want of power to apprehend, understand, and manage.
• incarcerate v. To imprison.
• incendiary n. Chemical or person who starts a fire-literally or figuratively.
• incentive n. That which moves the mind or inflames the passions.
• inception n. The beginning.
• inceptive adj. Beginning.
• incessant adj. Unceasing.
• inchmeal adv. Piecemeal.
• inchoate adj. Incipient.
• inchoative n. That which begins, or expresses beginning.
• incidence n. Casual occurrence.
• incident n. A happening in general, especially one of little importance.
• incidentally adv. Without intention.
• incinerate v. To reduce to ashes.
• incipience n. Beginning.
• incipient adj. Initial.
• incisor n. A front or cutting tooth.
• incite v. To rouse to a particular action.
• incitement n. That which moves to action, or serves as an incentive or stimulus.
• incoercible adj. Incapable of being forced, constrained, or compelled.
• incoherence n. Want of connection, or agreement, as of parts or ideas in thought, speech, etc.
• incoherent adj. Not logically coordinated, as to parts, elements, or details.
• incombustible adj. That can not be burned.
• incomparable adj. Matchless.
• incompatible adj. Discordant.
• incompetence n. General lack of capacity or fitness.
• incompetent adj. Not having the abilities desired or necessary for any purpose.
• incomplete adj. Lacking some element, part, or adjunct necessary or required.
• incomprehensible adj. Not understandable.
• incompressible adj. Resisting all attempts to reduce volume by pressure.
• inconceivable adj. Incomprehensible.
• incongruous adj. Unsuitable for the time, place, or occasion.
• inconsequential adj. Valueless.
• inconsiderable adj. Small in quantity or importance.
• inconsistent adj. Contradictory.
• inconstant adj. Changeable.
• incontrovertible adj. Indisputable.
• inconvenient adj. Interfering with comfort or progress.
• indefensible adj. Untenable.
• indefinitely adv. In a vague or uncertain way.
• indelible adj. That can not be blotted out, effaced, destroyed, or removed.
• indescribable adj. That can not be described.
• indestructible adj. That can not be destroyed.
• indicant adj. That which points out.
• indicator n. One who or that which points out.
• indict v. To find and declare chargeable with crime.
• indigence n. Poverty.
• indigenous adj. Native.
• indigent adj. Poor.
• indigestible adj. Not digestible, or difficult to digest.
• indigestion n. Difficulty or failure in the alimentary canal in changing food into absorptive nutriment.
• indignant adj. Having such anger and scorn as is aroused by meanness or wickedness.
• indignity n. Unmerited contemptuous conduct or treatment.
• indiscernible adj. Not perceptible.
• indiscreet adj. Lacking wise judgment.
• indiscriminate adj. Promiscuous.
• indispensable adj. Necessary or requisite for the purpose.
• indistinct adj. Vague.
• indivertible adj. That can not be turned aside.
• indivisible adj. Not separable into parts.
• indolence n. Laziness.
• indolent adj. Habitually inactive or idle.
• indomitable adj. Unconquerable.
• induct v. To bring in.
• indulgence n. The yielding to inclination, passion, desire, or propensity in oneself or another.
• indulgent adj. Yielding to the desires or humor of oneself or those under one's care.
• inebriate v. To intoxicate.
• inedible adj. Not good for food.
• ineffable adj. Unutterable.
• inefficient adj. Not accomplishing an intended purpose.
• inefficiency n. That which does not accomplish an intended purpose.
• ineligible adj. Not suitable to be selected or chosen.
• inept adj. Not fit or suitable.
• inert adj. Inanimate.
• inestimable adj. Above price.
• inevitable adj. Unavoidable.
• inexcusable adj. Not to be justified.
• inexhaustible adj. So large or furnishing so great a supply as not to be emptied, wasted, or spent.
• inexorable adj. Unrelenting.
• inexpedient adj. Unadvisable.
• inexpensive adj. Low-priced.
• inexperience n. Lack of or deficiency in experience.
• inexplicable adj. Such as can not be made plain.
• inexpressible adj. Unutterable.
• inextensible adj. Of unchangeable length or area.
• infallible adj. Exempt from error of judgment, as in opinion or statement.
• infamous adj. Publicly branded or notorious, as for vice, or crime.
• infamy n. Total loss or destitution of honor or reputation.
• inference n. The derivation of a judgment from any given material of knowledge on the ground of law.
• infernal adj. Akin to or befitting hell or its occupants.
• infest v. To be present in such numbers as to be a source of annoyance, trouble, or danger.
• infidel n. One who denies the existence of God.
• infidelity n. Disloyalty.
• infinite adj. Measureless.
• infinity n. Boundless or immeasurable extension or duration.
• infirm adj. Lacking in bodily or mental strength.
• infirmary n. A place for the reception or treatment of the sick.
• infirmity n. A physical, mental, or moral weakness or flaw.
• inflammable adj. Easily set on fire or excited.
• inflammation n. A morbid process in some part of the body characterized by heat, swelling, and pain.
• inflexible adj. That can not be altered or varied.
• influence n. Ability to sway the will of another.
• influential adj. Having the power to sway the will of another.
• influx n. Infusion.
• infrequence n. Rareness.
• infrequent adj. Uncommon.
• infringe v. To trespass upon.
• infuse v. To instill, introduce, or inculcate, as principles or qualities.
• infusion n. The act of imbuing, or pouring in.
• ingenious adj. Evincing skill, originality, or cleverness, as in contrivance or arrangement.
• ingenuity n. Cleverness in contriving, combining, or originating.
• ingenuous adj. Candid, frank, or open in character or quality.
• inglorious adj. Shameful.
• ingraft v. To set or implant deeply and firmly.
• ingratiate v. To win confidence or good graces for oneself.
• ingratitude n. Insensibility to kindness.
• ingredient n. Component.
• inherence n. The state of being permanently existing in something.
• inherent adj. Intrinsic.
• inhibit v. To hold back or in.
• inhospitable adj. Not disposed to entertain strangers gratuitously.
• inhuman adj. Savage.
• inhume v. To place in the earth, as a dead body.
• inimical adj. Adverse.
• iniquity n. Gross wrong or injustice.
• initiate v. To perform the first act or rite.
• inject v. To introduce, as a fluid, by injection.
• injunction n. Mandate.
• inkling n. A hint.
• inland adj. Remote from the sea.
• inlet n. A small body of water leading into a larger.
• inmost adj. Deepest within.
• innocuous adj. Harmless.
• innovate v. To introduce or strive to introduce new things.
• innuendo n. Insinuation.
• innumerable adj. Countless.
• inoffensive adj. Causing nothing displeasing or disturbing.
• inopportune adj. Unsuitable or inconvenient, especially as to time.
• inquire v. To ask information about.
• inquisition n. A court or tribunal for examination and punishment of heretics.
• inquisitive adj. Given to questioning, especially out of curiosity.
• inquisitor n. One who makes an investigation.
• inroad n. Forcible encroachment or trespass.
• insatiable adj. That desires or craves immoderately or unappeasably.
• inscribe v. To enter in a book, or on a list, roll, or document, by writing