Webster's Dictionary, 1913

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Impetrative adjective [ Latin impetrativus obtained by entreaty.] Of the nature of impetration; getting, or tending to get, by entreaty. [ Obsolete] Bp. Hall.

Impetratory adjective Containing or expressing entreaty. [ Obsolete] Jer. Taylor.

Impetuosity noun [ Confer French impétuosité .]
1. The condition or quality of being impetuous; fury; violence.

2. Vehemence, or furiousnes of temper. Shak.

Impetuous adjective [ French impetueux , Latin impetuosus . See Impetus .]
1. Rushing with force and violence; moving with impetus; furious; forcible; violent; as, an impetuous wind; an impetuous torrent.

Went pouring forward with impetuous speed.
Byron.

2. Vehement in feeling; hasty; passionate; violent; as, a man of impetuous temper.

The people, on their holidays,
Impetuous , insolent, unquenchable.
Milton.

Syn. -- Forcible; rapid; hasty; precipitate; furious; boisterous; violent; raging; fierce; passionate.

-- Im*pet"u*ous*ly , adverb -- Im*pet"u*ous*ness , noun

Impetus noun [ Latin , from impetere to rush upon, attack; prefix im- in + petere to fall upon, seek. See Petition .]
1. A property possessed by a moving body in virtue of its weight and its motion; the force with which any body is driven or impelled; momentum.

» Momentum is the technical term, impetus its popular equivalent, yet differing from it as applied commonly to bodies moving or moved suddenly or violently, and indicating the origin and intensity of the motion, rather than its quantity or effectiveness.

2. Fig.: Impulse; incentive; vigor; force. Buckle.

3. (Gun.) The altitude through which a heavy body must fall to acquire a velocity equal to that with which a ball is discharged from a piece.

Impeyan pheasant (ĭm"pĭ* a n fĕz" a nt). [ From Lady Impey , who attempted to naturalize the bird in England.] (Zoology) An Indian crested pheasant of the genus Lophophorus . Several species are known. Called also monaul , monal .

» They are remarkable for the bright color and brilliant matallic hues of their plumage. The best known species ( Latin Impeyanus ) has the neck of a brilliant metallic red, changing to golden yellow in certain lights.

Imphee (ĭm"fē) noun (Botany) The African sugar cane ( Holcus saccharatus ), -- resembling the sorghum, or Chinese sugar cane.

Impi (ĭm"pĭ) noun [ Zulu.] A body of Kaffir warriors; a body of native armed men. [ South Africa]

As early as 1862 he crossed assagais with and defeated a Matabili impi (war band).
James Bryce.

Impictured (ĭm*pĭk"turd; 135) adjective Pictured; impressed. [ Obsolete] Spenser.

Impierce (ĭm*pērs") transitive verb [ Prefix im- in + pierce . Confer Empierce .] To pierce; to penetrate. [ Obsolete] Drayton.

Impierceable (-ȧ*b'l) adjective Not capable of being pierced; impenetrable. [ Obsolete] Spenser.

Impiety (ĭm*pī"e*tȳ) noun ; plural Impieties (- tĭz). [ Latin impietas , from impius impious; confer French impiété . See Impious , Piety .]
1. The quality of being impious; want of piety; irreverence toward the Supreme Being; ungodliness; wickedness.

2. An impious act; an act of wickedness.

Those impieties for the which they are now visited.
Shak.

Syn. -- Ungodliness; irreligion; unrighteousness; sinfulness; profaneness; wickedness; godlessness.

Impignorate (ĭm*pĭg"no*rāt) transitive verb [ Late Latin impignoratus , p. pl of impignorare to pawn. See Pignoration .] To pledge or pawn. [ Obsolete] Laing.

Impignoration (-rā"shŭn) noun [ Late Latin impignoratio : confer French impignoration .] The act of pawning or pledging; the state of being pawned. [ Obsolete] Bailey.

Imping (ĭmp"ĭng) noun [ See Imp to graft.]
1. The act or process of grafting or mending. [ Archaic]

2. (Falconry) The process of repairing broken feathers or a deficient wing.

Impinge transitive verb [ imperfect & past participle Impinged ; present participle & verbal noun Impinging .] [ Latin impingere ; prefix im- in + pangere to fix, strike; probably akin to pacisci to agree, contract. See Pact , and confer Impact .] To fall or dash against; to touch upon; to strike; to hit; to clash with; -- with on or upon .

The cause of reflection is not the impinging of light on the solid or impervious parts of bodies.
Sir I. Newton.

But, in the present order of things, not to be employed without impinging on God's justice.
Bp. Warburton.

Impingement noun The act of impinging.

Impingent adjective [ Latin impingens , present participle] Striking against or upon.

Impinguate transitive verb [ Latin impinguatus , past participle of impinguare to fatten; prefix im- in + pinguis fat.] To fatten; to make fat. [ Obsolete] Bacon.

Impinguation noun The act of making fat, or the state of being fat or fattened. [ Obsolete]

Impious adjective [ Latin impius ; prefix im- not + pius piou. See Pious .] Not pious; wanting piety; irreligious; irreverent; ungodly; profane; wanting in reverence for the Supreme Being; as, an impious deed; impious language.

When vice prevails, and impious men bear away,
The post of honor is a private station.
Addison.

Syn. -- Impious , Irreligious , Profane . Irreligious is negative, impious and profane are positive. An indifferent man may be irreligious ; a profane man is irreverent in speech and conduct; an impious man is wickedly and boldly defiant in the strongest sense. Profane also has the milder sense of secular . C. J. Smith.

-- Im"pi*ous*ly , adverb -- Im"pi*ous*ness , noun

Impire noun See Umpire . [ Obsolete] Huloet.

Impish (ĭmp"ĭsh) adjective Having the qualities, or showing the characteristics, of an imperfect

Impishly adverb In the manner of an imperfect

Impiteous adjective Pitiless; cruel. [ Obsolete]

Implacability noun [ Latin implacabilitas : confer French implacabilité .] The quality or state of being implacable.

Implacable adjective [ Latin implacabilis ; prefix im- not + placabilis : confer French implacable . See Placable .]
1. Not placable; not to be appeased; incapable of being pacified; inexorable; as, an implacable prince.

I see thou art implacable .
Milton.

An object of implacable enmity.
Macaulay.

2. Incapable of being relieved or assuaged; inextinguishable. [ R.]

O! how I burn with implacable fire.
Spenser.

Which wrought them pain
Implacable , and many a dolorous groan.
Milton.

Syn. -- Unappeasable; inexorable; irreconcilable; unrelenting; relentless; unyielding.

Implacableness noun The quality of being implacable; implacability.

Implacably adverb In an implacable manner.

Implacental adjective (Zoology) Without a placenta, as marsupials and monotremes. -- noun A mammal having no placenta.

Implacentalia noun plural [ New Latin See In- not, and Placental .] (Zoology) A primary division of the Mammalia, including the monotremes and marsupials, in which no placenta is formed.

Implant transitive verb [ imperfect & past participle Implanted ; present participle & verbal noun Implanting .] [ Prefix im- in + plant : confer French implanter .] To plant, or infix, for the purpose of growth; to fix deeply; to instill; to inculate; to introduce; as, to implant the seeds of virtue, or the principles of knowledge, in the minds of youth.

Minds well implanted with solid . . . breeding.
Milton.

Implantation noun [ Confer French implantation .] The act or process of implanting.

Implate transitive verb [ imperfect & past participle Implated ; present participle & verbal noun Implating .] To cover with plates; to sheathe; as, to implate a ship with iron.

Implausibility noun Want of plausibility; the quality of being implausible.

Implausible adjective [ Prefix im- not + plausible : confer French implausible .] Not plausible; not wearing the appearance of truth or credibility, and not likely to be believed. " Implausible harangues." Swift.

-- Im*plau"si*ble*ness , noun -- Im*plau"si*bly , adverb

Impleach transitive verb To pleach; to interweave. [ Obsolete] Shak.

Implead transitive verb [ imperfect & past participle Impleaded ; present participle & verbal noun Impleading .] [ Confer Emplead .] (Law) To institute and prosecute a suit against, in court; to sue or prosecute at law; hence, to accuse; to impeach.

Implead intransitive verb To sue at law.

Impleadable adjective Not admitting excuse, evasion, or plea; rigorous. [ R.] T. Adams.

Impleader noun (Law) One who prosecutes or sues another.

Impleasing adjective Unpleasing; displeasing. [ Obsolete] Overbury.

Impledge transitive verb To pledge. Sir W. Scott.

Implement (ĭm"ple*m e nt) noun [ Late Latin implementum accomplishment, from Latin implere , impletum , to fill up, finish, complete; prefix im- in + plere to fill. The word was perhaps confused with Old French empleier , emploier , to employ, French employer , whence English employ . See Plenty .] That which fulfills or supplies a want or use; esp., an instrument, tool, or utensil, as supplying a requisite to an end; as, the implements of trade, of husbandry, or of war.

Genius must have talent as its complement and implement .
Coleridge.

Implement transitive verb
1. To accomplish; to fulfill. [ R.]

Revenge . . . executed and implemented by the hand of Vanbeest Brown.
Sir W. Scott.

2. To provide with an implement or implements; to cause to be fulfilled, satisfied, or carried out, by means of an implement or implements.

The chief mechanical requisites of the barometer are implemented in such an instrument as the following.
Nichol.

3. (Scots Law) To fulfill or perform, as a contract or an engagement.

Implemental adjective Pertaining to, or characterized by, implements or their use; mechanical.

Impletion noun [ Latin impletio . See Implement .]
1. The act of filling, or the state of being full. Sir T. Browne.

2. That which fills up; filling. Coleridge.

Implex adjective [ Latin implexus , past participle of implectere to infold; prefix im- in + plectere to plait: confer F implexe .] Intricate; entangled; complicated; complex.

The fable of every poem is . . . simple or implex . it is called simple when there is no change of fortune in it; implex , when the fortune of the chief actor changes from bad to good, or from good to bad.
Addison.

Implexion noun [ Latin implexio .] Act of involving, or state of being involved; involution.

Impliable adjective Not pliable; inflexible; unyielding.