← SAT Words 23/50 Export Options Alphabetize Word-Def Delimiter Tab Comma Custom Def-Word Delimiter New Line Semicolon Custom Data Copy and paste the text below. It is read-only. Select All illogical Contrary to the rules of sound thought. illuminant That which may be used to produce light. illuminate To supply with light. illumine To make bright or clear. illusion An unreal image presented to the senses. illusive Deceptive. illusory Deceiving or tending to deceive, as by false appearance. imaginable That can be imagined or conceived in the mind. imaginary Fancied. imbibe To drink or take in. imbroglio A misunderstanding attended by ill feeling, perplexity, or strife. imbrue To wet or moisten. imitation That which is made as a likeness or copy. imitator One who makes in imitation. immaculate Without spot or blemish. immaterial Of no essential consequence. immature Not full-grown. immeasurable Indefinitely extensive. immense Very great in degree, extent, size, or quantity. immerse To plunge or dip entirely under water or other fluid. immersion The act of plunging or dipping entirely under water or another fluid. immigrant A foreigner who enters a country to settle there. immigrate To come into a country or region from a former habitat. imminence Impending evil or danger. imminent Dangerous and close at hand. immiscible Separating, as oil and water. immoral Habitually engaged in licentious or lewd practices. immortalize To cause to last or to be known or remembered throughout a great or indefinite length of time. immovable Steadfast. immune Exempt, as from disease. immutable Unchangeable. impair To cause to become less or worse. impalpable Imperceptible to the touch. impartial Unbiased. impassable That can not be passed through or over. impassible Not moved or affected by feeling. impassive Unmoved by or not exhibiting feeling. impatience Unwillingness to brook delays or wait the natural course of things. impeccable Blameless. impecunious Having no money. impede To be an obstacle or to place obstacles in the way of. impel To drive or urge forward. impend To be imminent. imperative Obligatory. imperceptible Indiscernible. imperfectible That can not be perfected. imperil To endanger. imperious Insisting on obedience. impermissible Not permissible. impersonal Not relating to a particular person or thing. impersonate To appear or act in the character of. impersuadable Unyielding. impertinence Rudeness. imperturbable Calm. impervious Impenetrable. impetuosity Rashness. impetuous Impulsive. impetus Any impulse or incentive. impiety Irreverence toward God. impious Characterized by irreverence or irreligion. implausible Not plausible. impliable Capable of being inferred. implicate To show or prove to be involved in or concerned implicit Implied. imply To signify. impolitic Inexpedient. importation The act or practice of bringing from one country into another. importunate Urgent in character, request, or demand. importune To harass with persistent demands or entreaties. impotent Destitute of or lacking in power, physical, moral, or intellectual. impoverish To make indigent or poor. impracticable Not feasible. impregnable That can not be taken by assault. impregnate To make pregnant. impromptu Anything done or said on the impulse of the moment. improper Not appropriate, suitable, or becoming. impropriety The state or quality of being unfit, unseemly, or inappropriate. improvident Lacking foresight or thrift. improvise To do anything extemporaneously or offhand. imprudent Heedless. impudence Insolent disrespect. impugn To assail with arguments, insinuations, or accusations. impulsion Impetus. impulsive Unpremeditated. impunity Freedom from punishment. impure Tainted. impute To attribute. inaccessible Difficult of approach. inaccurate Not exactly according to the facts. inactive Inert. inadequate Insufficient. inadmissible Not to be approved, considered, or allowed, as testimony. inadvertent Accidental. inadvisable Unadvisable. inane Silly. inanimate Destitute of animal life. inapprehensible Not to be understood. inapt Awkward or slow. inarticulate Speechless. inaudible That can not be heard.