Impenitence noun [ Latin impenitentia : confer French impénitence .] The condition of being impenitent; failure or refusal to repent; hardness of heart.

He will advance from one degree of wickedness and impenitence to another.

Rogers.

Impenitency noun Impenitence. Milton.

Impenitent adjective [ Latin impaenitens ; prefix im- not + paenitens penitens: confer French impénitent . See Penitent .] Not penitent; not repenting of sin; not contrite; of a hard heart. "They . . . died impenitent ." Milton. "A careless and impenitent heart." Bp. Hall.

Impenitent noun One who is not penitent. [ R.]

Impenitently adverb Without repentance.

Impennate adjective (Zoology) Characterized by short wings covered with feathers resembling scales, as the penguins. -- noun One of the Impennes.

Impennes noun plural [ New Latin , from Latin prefix im- not + penna feather.] (Zoology) An order of birds, including only the penguins, in which the wings are without quills, and not suited for flight.

Impennous adjective [ Latin prefix im- not + penna wing.] (Zoology) Having no wings, as some insects.

Impeople transitive verb [ imperfect & past participle Impeopled ; present participle & verbal noun Impeopling .] [ See Empeople .] To people; to give a population to. [ Obsolete]

Thou hast helped to impeople hell.

Beaumont.

Imperant adjective [ Latin imperans , present participle of imperare to command.] Commanding. [ R.] Baxter.

Imperate adjective [ Latin imperatus , past participle of imperare to command.] Done by express direction; not involuntary; communded. [ Obsolete]

Those imperate acts, wherein we see the empire of the soul.

Sir M. Hale.

Imperatival adjective (Gram.) Of or pertaining to the imperative mood.

Imperative adjective [ Latin imperativus , from imperare to command; prefix im- in + parare to make ready, prepare: confer French impératif . See Perade , and confer Empire .]
1. Expressive of command; containing positive command; authoritatively or absolutely directive; commanding; authoritative; as, imperative orders.

The suit of kings are imperative .

Bp. Hall.

2. Not to be avoided or evaded; obligatory; binding; compulsory; as, an imperative duty or order.

3. (Gram.) Expressive of commund, entreaty, advice, or exhortation; as, the imperative mood.

Imperative noun (Gram.) The imperative mood; also, a verb in the imperative mood.

Imperatively adverb In an imperative manner.

Imperator noun [ Latin See Emperor .] (Rom. Antiq.) A commander; a leader; an emperor; -- originally an appellation of honor by which Roman soldiers saluted their general after an important victory. Subsequently the title was conferred as a recognition of great military achievements by the senate, whence it carried wiht it some special privileges. After the downfall of the Republic it was assumed by Augustus and his successors, and came to have the meaning now attached to the word emperor .

Imperatorial adjective [ Latin imperatorius .]
1. Commanding; imperative; authoritative.

2. Of or pertaining to the title or office of imperator. " Imperatorial laurels." C. Merivale.

Imperatorian adjective Imperial. [ R.] Gauden.

Imperatory adjective Imperative. [ R.]

Imperceivable adjective Imperceptible. [ R.] South. -- Im`per*ceiv"a*ble*ness , noun Sharp.

Imperceived adjective Not perceived. [ Obsolete]

Imperceptibility noun The state or quality of being imperceptible.

Imperceptible adjective [ Prefix im- not + perceptible : confer French imperceptible .] Not perceptible; not to be apprehended or cognized by the senses; not discernible by the mind; not easily apprehended.

Almost imperceptible to the touch.

Dryden.

Its operation is slow, and in some cases almost imperceptible .

Burke.

-- Im`per*cep"ti*ble*ness , noun -- Im`per*cep"ti*bly , adverb

Their . . . subtilty and imperceptibleness .

Sir M. Hale.

Imperception noun Want of perception.

Imperceptive adjective Unable to perceive.

The imperceptive part of the soul.

Dr. H. More.

Impercipient adjective Not perceiving, or not able to perceive. A. Baxter.

Imperdibility noun The state or quality of being imperdible. [ Obsolete] Derham.

Imperdible adjective [ Prefix im- not + Latin perdere to destroy.] Not destructible. [ Obsolete] -- Im*per"di*bly , adverb [ Obsolete]

Imperfect adjective [ Latin imperfectus : prefix im- not + perfectus perfect: confer F imparfait , whence Middle English imparfit . See Perfect .]
1. Not perfect; not complete in all its parts; wanting a part; deective; deficient.

Something he left imperfect in the state.

Shak.

Why, then, your other senses grow imperfect .

Shak.

2. Wanting in some elementary organ that is essential to successful or normal activity.

He . . . stammered like a child, or an amazed, imperfect person.

Jer. Taylor.

3. Not fulfilling its design; not realizing an ideal; not conformed to a standard or rule; not satisfying the taste or conscience; esthetically or morally defective.

Nothing imperfect or deficient left
Of all that he created.

Milton.

Then say not man's imperfect , Heaven in fault;
Say rather, man's as perfect as he ought.

Pope.

Imperfect arch , an arch of less than a semicircle; a skew arch. -- Imperfect cadence (Mus.) , one not ending with the tonic, but with the dominant or some other chord; one not giving complete rest; a half close. -- Imperfect consonances (Mus.) , chords like the third and sixth, whose ratios are less simple than those of the fifth and forth. -- Imperfect flower (Botany) , a flower wanting either stamens or pistils. Gray. -- Imperfect interval (Mus.) , one a semitone less than perfect; as, an imperfect fifth. -- Imperfect number (Math.) , a number either greater or less than the sum of its several divisors; in the former case, it is called also a defective number ; in the latter, an abundant number . -- Imperfect obligations (Law) , obligations as of charity or gratitude, which cannot be enforced by law. -- Imperfect power (Math.) , a number which can not be produced by taking any whole number or vulgar fraction, as a factor, the number of times indicated by the power; thus, 9 is a perfect square, but an imperfect cube. -- Imperfect tense (Gram.) , a tense expressing past time and incomplete action.

Imperfect noun (Gram.) The imperfect tense; or the form of a verb denoting the imperfect tense.

Imperfect transitive verb To make imperfect. [ Obsolete]

Imperfectibility noun The state or quality of being imperfectible. [ R.]

Imperfectible adjective Incapable of being made perfect. [ R.]

Imperfection noun [ Latin imperfectio : confer French imperfection . See Imperfect , adjective ] The quality or condition of being imperfect; want of perfection; incompleteness; deficiency; fault or blemish.

Sent to my account
With all my imperfections on my head.

Shak.

Syn. -- Defect; deficiency; incompleteness; fault; failing; weakness; frailty; foible; blemish; vice.

Imperfectness noun The state of being imperfect.

Imperforable adjective [ See Imperforate .] Incapable of being perforated, or bored through.

Imperforata noun plural [ New Latin See Imperforate .] (Zoology) A division of Foraminifera, including those in which the shell is not porous.

Imperforate, Imperforated adjective [ Latin prefix im- not + perforatus , past participle of perforate to perforate. See Perforate .] Not perforated; having no opening or aperture. Sir J. Banks.

Imperforation noun [ Confer French imperforation .] The state of being without perforation.

Imperial adjective [ Middle English emperial , Old French emperial , French impérial , from Latin imperialis , from imperium command, sovereignty, empire. See Empire .]
1. Of or pertaining to an empire, or to an emperor; as, an imperial government; imperial authority or edict.

The last
That wore the imperial diadem of Rome.

Shak.

2. Belonging to, or suitable to, supreme authority, or one who wields it; royal; sovereign; supreme. "The imperial democracy of Athens." Mitford.

Who, as Ulysses says, opinion crowns
With an imperial voice.

Shak.

To tame the proud, the fetter'd slave to free,
These are imperial arts, and worthy thee.

Dryden.

He sounds his imperial clarion along the whole line of battle.

E. Everett.

3. Of superior or unusual size or excellence; as, imperial paper; imperial tea, etc.

Imperial bushel , gallon , etc. See Bushel , Gallon , etc. -- Imperial chamber , the, the sovereign court of the old German empire. -- Imperial city , under the first German empire, a city having no head but the emperor. -- Imperial diet , an assembly of all the states of the German empire. -- Imperial drill . (Manuf.) See under 8th Drill . -- Imperial eagle . (Zoology) See Eagle . -- Imperial green . See Paris green , under Green . -- Imperial guard , the royal guard instituted by Napoleon I. - - Imperial weights and measures , the standards legalized by the British Parliament.

Imperial noun [ French impériale : confer Spanish imperial .]

1. The tuft of hair on a man's lower lip and chin; -- so called from the style of beard of Napoleon III.

2. An outside seat on a diligence. T. Hughes.

3. A luggage case on the top of a coach. Simmonds.

4. Anything of unusual size or excellence, as a large decanter, a kind of large photograph, a large sheet of drawing, printing, or writing paper, etc.

5. A gold coin of Russia worth ten rubles, or about eight dollars. McElrath.

6. A kind of fine cloth brought into England from Greece. or other Eastern countries, in the Middle Ages.

Imperial noun A game at cards differing from piquet in some minor details, and in having a trump; also, any one of several combinations of cards which score in this game.

Imperialism noun The power or character of an emperor; imperial authority; the spirit of empire.

Roman imperialism had divided the world.

C. H. Pearson.

Imperialism noun The policy, practice, or advocacy of seeking, or acquiescing in, the extension of the control, dominion, or empire of a nation, as by the acquirement of new, esp. distant, territory or dependencies, or by the closer union of parts more or less independent of each other for operations of war, copyright, internal commerce, etc.

The tide of English opinion began to turn about 1870, and since then it has run with increasing force in the direction of what is called imperialism .

James Bryce.

Imperialist noun [ Confer French impérialiste .] One who serves an emperor; one who favors imperialism.

Imperiality noun ; plural Imperialities

1. Imperial power.

2. An imperial right or privilegs. See Royalty .

The late empress having, by ukases of grace, relinquished her imperialities on the private mines, viz., the tenths of the copper, iron, silver and gold.

W. Tooke.

Imperialize transitive verb [ imperfect & past participle Imperialized ; present participle & verbal noun Imperializing .] To invest with imperial authority, character, or style; to bring to the form of an empire. Fuller.

Imperially adverb In an imperial manner.

Imperially noun Imperial power. [ R.] Sheldon.

Imperil transitive verb [ imperfect & past participle Imperiled or Imperilled ; present participle & verbal noun Imperiling or Imperilling .] To bring into peril; to endanger.