| impossibly | (adverb) to a degree impossible of achievement | - |
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| impost | (noun) the lowest stone in an arch -- from which it springs | Synonyms: springer |
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| (noun) money collected under a tariff | Synonyms: custom, customs, customs duty |
| imposter | (noun) a person who makes deceitful pretenses | Synonyms: fake, faker, fraud, impostor, pretender, pseud, pseudo, role player, sham, shammer |
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| impostor | (noun) a person who makes deceitful pretenses | Synonyms: fake, faker, fraud, imposter, pretender, pseud, pseudo, role player, sham, shammer |
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| imposture | (noun) pretending to be another person | Synonyms: impersonation |
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| impotence | (noun) the quality of lacking strength or power; being weak and feeble | Synonyms: impotency, powerlessness |
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| (noun) an inability (usually of the male animal) to copulate | Synonyms: impotency |
| impotency | (noun) the quality of lacking strength or power; being weak and feeble | Synonyms: impotence, powerlessness |
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| (noun) an inability (usually of the male animal) to copulate | Synonyms: impotence |
| impotent | (adjective) lacking power or ability | - |
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| (adjective) (of a male) unable to copulate | - |
| impotently | (adverb) in a helpless manner | Synonyms: helplessly |
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| impound | (verb) place or shut up in a pound | Synonyms: pound |
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| (verb) take temporary possession of as a security, by legal authority | Synonyms: attach, confiscate, seize, sequester |
| impounding | (noun) placing private property in the custody of an officer of the law | Synonyms: impoundment, internment, poundage |
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| impoundment | (noun) placing private property in the custody of an officer of the law | Synonyms: impounding, internment, poundage |
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| impoverish | (verb) take away | Synonyms: deprive |
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| (verb) make poor | - |
| impoverished | (adjective) destroyed financially | Synonyms: broken, wiped out |
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| (adjective) poor enough to need help from others | Synonyms: destitute, indigent, necessitous, needy, poverty-stricken |
| impoverishment | (noun) the act of making someone poor | Synonyms: pauperisation, pauperization |
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| (noun) the state of having little or no money and few or no material possessions | Synonyms: poorness, poverty |
| impracticability | (noun) the quality of not being usable | Synonyms: impracticableness |
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| impracticable | (adjective) not capable of being carried out or put into practice | Synonyms: infeasible, unfeasible, unworkable |
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| impracticableness | (noun) the quality of not being usable | Synonyms: impracticability |
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| impracticably | (adverb) to an impracticable degree | - |
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| impractical | (adjective) not practical; not workable or not given to practical matters | - |
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| (adjective) not practical or realizable; speculative | Synonyms: airy, Laputan, visionary, windy |
| impracticality | (noun) concerned with theoretical possibilities rather than actual use | - |
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| imprecate | (verb) utter obscenities or profanities | Synonyms: blaspheme, curse, cuss, swear |
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| (verb) wish harm upon; invoke evil upon | Synonyms: anathemise, anathemize, bedamn, beshrew, curse, damn, maledict |
| imprecation | (noun) the act of calling down a curse that invokes evil (and usually serves as an insult) | Synonyms: malediction |
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| (noun) a slanderous accusation | - |
| imprecise | (adjective) not precise | - |
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| imprecisely | (adverb) in an imprecise manner | Synonyms: inexactly |
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| impreciseness | (noun) the quality of lacking precision | Synonyms: imprecision |
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| imprecision | (noun) the quality of lacking precision | Synonyms: impreciseness |
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| impregnability | (noun) having the strength to withstand attack | Synonyms: invulnerability |
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| impregnable | (adjective) capable of conceiving | Synonyms: conceptive |
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| (adjective) immune to attack; incapable of being tampered with | Synonyms: inviolable, secure, strong, unassailable, unattackable |
| (adjective) incapable of being overcome, challenged or refuted | Synonyms: inexpugnable |
| impregnably | (adverb) in an impregnable manner | - |
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| impregnate | (verb) make pregnant | Synonyms: bang up, knock up, prang up |
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| (verb) fertilize and cause to grow | - |
| (verb) infuse or fill completely | Synonyms: saturate |
| (verb) fill, as with a certain quality | Synonyms: infuse, instill, tincture |
| impregnation | (noun) creation by the physical union of male and female gametes; of sperm and ova in an animal or pollen and ovule in a plant | Synonyms: fecundation, fertilisation, fertilization |
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| (noun) the process of totally saturating something with a substance | Synonyms: saturation |
| (noun) material with which something is impregnated | - |
| impresario | (noun) a sponsor who books and stages public entertainments | Synonyms: promoter, showman |
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| impress | (noun) the act of coercing someone into government service | Synonyms: impressment |
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| (verb) dye (fabric) before it is spun | Synonyms: yarn-dye |
| (verb) produce or try to produce a vivid impression of | Synonyms: ingrain, instill |
| (verb) mark or stamp with or as if with pressure | Synonyms: imprint |
| (verb) take (someone) against his will for compulsory service, especially on board a ship | Synonyms: shanghai |
| (verb) reproduce by printing | Synonyms: print |
| (verb) impress positively | - |
| (verb) have an emotional or cognitive impact upon | Synonyms: affect, move, strike |
| impressed | (adjective) deeply or markedly affected or influenced | - |
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| impressible | (adjective) easily impressed or influenced | Synonyms: impressionable, waxy |
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| impression | (noun) an impressionistic portrayal of a person | - |
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| (noun) the act of pressing one thing on or into the surface of another | - |
| (noun) (dentistry) an imprint of the teeth and gums in wax or plaster | - |
| (noun) an outward appearance | Synonyms: effect |
| (noun) a vague idea in which some confidence is placed | Synonyms: belief, feeling, notion, opinion |
| (noun) a clear and telling mental image | Synonyms: mental picture, picture |
| (noun) a symbol that is the result of printing or engraving | Synonyms: stamp |
| (noun) all the copies of a work printed at one time | Synonyms: printing |
| (noun) a concavity in a surface produced by pressing | Synonyms: depression, imprint |
| impressionable | (adjective) easily impressed or influenced | Synonyms: impressible, waxy |
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| impressionist | (adjective) relating to or characteristic of Impressionism | Synonyms: impressionistic |
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| (noun) an artist who follows the theories of Impressionism | - |
| impressionistic | (adjective) relating to or characteristic of Impressionism | Synonyms: impressionist |
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| (adjective) of or relating to or based on an impression rather than on facts or reasoning | - |
| impressive | (adjective) making a strong or vivid impression | - |
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| (adjective) producing a strong effect | Synonyms: telling |
| impressively | (adverb) in an impressive manner | Synonyms: imposingly |
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| impressiveness | (noun) splendid or imposing in size or appearance | Synonyms: grandness, magnificence, richness |
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| (noun) the quality of making a strong or vivid impression on the mind | - |
| impressment | (noun) the act of coercing someone into government service | Synonyms: impress |
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| imprimatur | (noun) formal and explicit approval | Synonyms: countenance, endorsement, indorsement, sanction, warrant |
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| imprint | (noun) a device produced by pressure on a surface | - |
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| (noun) a distinctive influence | - |
| (noun) an impression produced by pressure or printing | Synonyms: embossment |
| (noun) an identification of a publisher; a publisher's name along with the date and address and edition that is printed at the bottom of the title page | - |
| (noun) a concavity in a surface produced by pressing | Synonyms: depression, impression |
| (verb) mark or stamp with or as if with pressure | Synonyms: impress |
| (verb) establish or impress firmly in the mind | Synonyms: form |
| imprinting | (noun) a learning process in early life whereby species specific patterns of behavior are established | - |
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| imprison | (verb) lock up or confine, in or as in a jail | Synonyms: gaol, immure, incarcerate, jail, jug, lag, put away, put behind bars, remand |
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| (verb) confine as if in a prison | - |
| imprisoned | (adjective) being in captivity | Synonyms: captive, confined, jailed |
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| imprisonment | (noun) the act of confining someone in a prison (or as if in a prison) | Synonyms: internment |
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| (noun) putting someone in prison or in jail as lawful punishment | - |
| (noun) the state of being imprisoned | Synonyms: captivity, immurement, incarceration |
| improbability | (noun) the quality of being improbable | Synonyms: improbableness |
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| improbable | (adjective) not likely to be true or to occur or to have occurred | Synonyms: unlikely |
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| (adjective) having a probability too low to inspire belief | Synonyms: unbelievable, unconvincing, unlikely |
| (adjective) too improbable to admit of belief | Synonyms: marvellous, marvelous, tall |
| improbableness | (noun) the quality of being improbable | Synonyms: improbability |
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| improbably | (adverb) not easy to believe | Synonyms: implausibly, incredibly, unbelievably |
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| impromptu | (adjective) with little or no preparation or forethought | Synonyms: ad-lib, extemporaneous, extemporary, extempore, off-the-cuff, offhand, offhanded, unrehearsed |
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| (noun) an extemporaneous speech or remark | - |
| (noun) a short musical passage that seems to have been made spontaneously without advance preparation | - |
| (adverb) without advance preparation | Synonyms: ad lib, ad libitum, spontaneously |
| improper | (adjective) not suitable or right or appropriate | - |
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| (adjective) not appropriate for a purpose or occasion | Synonyms: wrong |
| (adjective) not conforming to legality, moral law, or social convention | Synonyms: unconventional, unlawful |
| improperly | (adverb) in an improper way | - |
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| improperness | (noun) an improper demeanor | Synonyms: impropriety |
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| impropriety | (noun) an act of undue intimacy | Synonyms: familiarity, indecorum, liberty |
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| (noun) an indecent or improper act | Synonyms: indecency |
| (noun) an improper demeanor | Synonyms: improperness |
| (noun) the condition of being improper | - |
| improvable | (adjective) susceptible of improvement | - |
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| improve | (verb) get better | Synonyms: ameliorate, better, meliorate |
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| (verb) to make better | Synonyms: ameliorate, amend, better, meliorate |
| improved | (adjective) made more desirable or valuable or profitable; especially made ready for use or marketing | - |
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| (adjective) become or made better in quality | - |
| (adjective) (of land) made ready for development or agriculture by clearing of trees and brush | - |
| improvement | (noun) the act of improving something | - |
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| (noun) a change for the better; progress in development | Synonyms: advance, betterment |
| (noun) a condition superior to an earlier condition | Synonyms: melioration |
| improver | (noun) a component that is added to something to improve it | Synonyms: add-on, addition |
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| (noun) someone devoted to the promotion of human welfare and to social reforms | Synonyms: do-gooder, humanitarian |
| improvidence | (noun) a lack of prudence and care by someone in the management of resources | Synonyms: shortsightedness |
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| improvident | (adjective) not provident; not providing for the future | - |
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| (adjective) not given careful consideration | Synonyms: ill-considered, ill-judged, shortsighted |
| improvidently | (adverb) in an improvident manner | - |
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| improving | (adjective) getting higher or more vigorous | Synonyms: up |
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| improvisation | (noun) an unplanned expedient | Synonyms: temporary expedient |
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| (noun) a performance given extempore without planning or preparation | Synonyms: extemporisation, extemporization |
| (noun) a creation spoken or written or composed extemporaneously (without prior preparation) | - |
| improvise | (verb) perform without preparation | Synonyms: ad-lib, extemporise, extemporize, improvize |
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| (verb) manage in a makeshift way; do with whatever is at hand | Synonyms: extemporize |
| improvised | (adjective) done or made using whatever is available | Synonyms: jury-rigged, makeshift |
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| improvize | (verb) perform without preparation | Synonyms: ad-lib, extemporise, extemporize, improvise |
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| imprudence | (noun) a lack of caution in practical affairs | - |
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| imprudent | (adjective) not prudent or wise | - |
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| (adjective) lacking wise self-restraint | - |
| imprudently | (adverb) in an imprudent manner | - |
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| impudence | (noun) the trait of being rude and impertinent; inclined to take liberties | Synonyms: cheekiness, crust, freshness, gall, impertinence, insolence |
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| (noun) an impudent statement | Synonyms: cheek, impertinence |
| impudent | (adjective) marked by casual disrespect | Synonyms: flip, insolent, snotty-nosed |
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| (adjective) improperly forward or bold | Synonyms: fresh, impertinent, overbold, sassy, saucy, smart, wise |
| impudently | (adverb) in an impudent or impertinent manner | Synonyms: freshly, impertinently, pertly, saucily |
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| impugn | (verb) attack as false or wrong | - |
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| impugnable | (adjective) subject to being discredited | - |
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| impuissance | (noun) powerlessness revealed by an inability to act | Synonyms: helplessness, weakness |
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| impuissant | (adjective) lacking physical strength or vigor | - |
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| impulse | (noun) the act of applying force suddenly | Synonyms: impetus, impulsion |
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| (noun) an impelling force or strength | Synonyms: momentum |
| (noun) the electrical discharge that travels along a nerve fiber | Synonyms: nerve impulse, nervous impulse, neural impulse |
| (noun) (electronics) a sharp transient wave in the normal electrical state (or a series of such transients) | Synonyms: pulsation, pulse, pulsing |
| (noun) a sudden desire | Synonyms: caprice, whim |
| (noun) an instinctive motive | Synonyms: urge |
| impulsion | (noun) the act of applying force suddenly | Synonyms: impetus, impulse |
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| (noun) a force that moves something along | Synonyms: drift, impetus |
| impulsive | (adjective) determined by chance or impulse or whim rather than by necessity or reason | Synonyms: capricious, whimsical |
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| (adjective) having the power of driving or impelling | Synonyms: driving |
| (adjective) characterized by undue haste and lack of thought or deliberation | Synonyms: brainish, hotheaded, impetuous, madcap, tearaway |
| (adjective) proceeding from natural feeling or impulse without external stimulus | Synonyms: unprompted |
| (adjective) without forethought | - |
| impulsively | (adverb) in an impulsive or impetuous way; without taking cautions | Synonyms: impetuously |
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| impulsiveness | (noun) the trait of acting suddenly on impulse without reflection | - |
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| impunity | (noun) exemption from punishment or loss | - |
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| impure | (adjective) (used of persons or behaviors) immoral or obscene | - |
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| (adjective) combined with extraneous elements | - |
| (adjective) having a physical or moral blemish so as to make impure according to dietary or ceremonial laws | Synonyms: unclean |
| impureness | (noun) the condition of being impure | Synonyms: impurity |
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| impurity | (noun) the condition of being impure | Synonyms: impureness |
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| (noun) worthless or dangerous material that should be removed | Synonyms: dross |
| imputable | (adjective) capable of being assigned or credited to | Synonyms: ascribable, due, referable |
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| imputation | (noun) the attribution to a source or cause | - |
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| (noun) a statement attributing something dishonest (especially a criminal offense) | - |
| impute | (verb) attribute or credit to | Synonyms: ascribe, assign, attribute |
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| (verb) attribute (responsibility or fault) to a cause or source | - |
| imputrescible | (adjective) not subject to decay | - |
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| limp | (adjective) lacking or having lost rigidity | - |
|---|
| (adjective) without energy or will | Synonyms: wilted |
| (noun) the uneven manner of walking that results from an injured leg | Synonyms: hitch, hobble |
| (verb) walk impeded by some physical limitation or injury | Synonyms: gimp, hitch, hobble |
| (verb) proceed slowly or with difficulty | - |
| limpa | (noun) a rye bread made with molasses or brown sugar | - |
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| limper | (noun) someone who has a limp and walks with a hobbling gait | Synonyms: hobbler |
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| limpet | (noun) any of various usually marine gastropods with low conical shells; found clinging to rocks in littoral areas | - |
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| (noun) mollusk with a low conical shell | - |
| limpid | (adjective) (of language) transparently clear; easily understandable | Synonyms: crystal clear, lucid, luculent, pellucid, perspicuous |
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| (adjective) transmitting light; able to be seen through with clarity | Synonyms: crystal clear, crystalline, lucid, pellucid, transparent |
| (adjective) clear and bright | Synonyms: liquid |