Webster's Dictionary, 1913

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Irresistless adjective Irresistible. [ Obsolete] Glanvill.

Irresoluble adjective [ Latin irresolubilis : confer French irrésoluble . See Resoluble , and confer Irresolvable .]


1. Incapable of being dissolved or resolved into parts; insoluble. Boyle.

2. Incapable of being relieved or assisted. [ Obsolete]

The second is in the irresoluble condition of our souls after a known sin committed.
Bp. Hall.

Irresolubleness noun The state or quality of being irresoluble; insolubility.

Irresolute adjective [ Prefix ir- not + resolute : confer French irrésolu , Latin irresolutus not loosened.] Not resolute; not decided or determined; wavering; given to doubt or irresolution.

Weak and irresolute is man.
Cowper.

Syn. -- Wavering; vacillating; undetermined; undecided; unsettled; fickle; changeable; inconstant.

-- Ir*res"o*lute*ly , adverb -- Ir*res"o*lute*ness , noun

Irresolution noun [ Confer French irrésolution .] Want of resolution; want of decision in purpose; a fluctuation of mind, as in doubt, or between hope and fear; irresoluteness; indecision; vacillation.

Irresolution on the schemes of life which offer themselves to our choice, and inconstancy in pursuing them, are the greatest causes of all unhappiness.
Addison.

Irresolvability noun The quality of being irresolvable; irresolvableness.

Irresolvable adjective [ Prefix ir- not + resolvable . Confer Irresoluble .] Incapable of being resolved; not separable into component parts.

Irresolvable nebulæ (Astron.) , nebulæ of a cloudlike appearance, which have not yet been resolved by the telescope into stars. Sir W. Herschel.

Irresolvableness noun The quality or state of being irresolvable; irresolvability.

Irresolvedly adverb Without settled determination; in a hesitating manner; doubtfully. [ R.]

Irrespective (-spĕk"tĭv) adjective
1. Without regard for conditions, circumstances, or consequences; unbiased; independent; impartial; as, an irrespective judgment.

According to this doctrine, it must be resolved wholly into the absolute, irrespective will of God.
Rogers.

2. Disrespectful. [ Obsolete] Sir C. Cornwallis.

Irrespective of , regardless of; without regard to; as, irrespective of differences.

Irrespectively (ĭr`re*spĕk"tĭv*lȳ) adverb Without regard to conditions; not taking circumstances into consideration.

Prosperity, considered absolutely and irrespectively , is better and more desirable than adversity.
South.

Irrespirable adjective [ Latin irrespirabilis : confer French irrespirable . See Respirable .] Unfit for respiration; not having the qualities necessary to support animal life; as, irrespirable air.

Irresponsibility noun [ Confer French irresponsabilité .] Want of, or freedom from, responsibility or accountability.

Irresponsible adjective [ Prefix ir- not + responsible : confer French irresponsable .]


1. Nor responsible; not liable or able to answer for consequences; innocent.

2. Not to be trusted; unreliable.

Irresponsibly adverb So as not to be responsible.

Irresponsive adjective Not responsive; not able, ready, or inclined to respond.

Irresuscitable adjective Incapable of being resuscitated or revived. -- Ir`re*sus"ci*ta*bly , adverb

Irretention noun Want of retaining power; forgetfulness. De Quincey.

Irretentive adjective Not retentive; as, an irretentive memory.

Irretraceable adjective Incapable of being retraced; not retraceable.

Irretractile adjective
1. Not retractile.

2. Not tractile or ductile. [ R.] Sir W. Hamilton.

Irretrievable adjective Not retrievable; irrecoverable; irreparable; as, an irretrievable loss.

Syn. -- Irremediable; incurable; irrecoverable.

Irretrievableness noun The state or quality of being irretrievable.

Irretrievably adverb In an irretrievable manner.

Irreturnable adjective Not to be returned.

Irrevealable adjective Incapable of being revealed. -- Ir`re*veal"a*bly , adverb

Irreverence noun [ Latin irreverentia : confer French irrévérence .] The state or quality of being irreverent; want of proper reverence; disregard of the authority and character of a superior.

Irreverend adjective Irreverent. [ Obsolete]

Immodest speech, or irreverend gesture.
Strype.

Irreverent adjective [ Latin irreverens , -entis : confer French irrévérent . See In- not, and Reverent .] Not reverent; showing a want of reverence; expressive of a want of veneration; as, an irreverent babbler; an irreverent jest.

Irreverently adverb In an irreverent manner.

Irreversibility noun The state or quality of being irreversible; irreversibleness.

Irreversible adjective
1. Incapable of being reversed or turned about or back; incapable of being made to run backward; as, an irreversible engine.

2. Incapable of being reversed, recalled, repealed, or annulled; as, an irreversible sentence or decree.

This rejection of the Jews, as it is not universal, so neither is it final and irreversible .
Jortin.

Syn. -- Irrevocable; irrepealable; unchangeable.

Irreversible steering gear (Machinery) A steering gear, esp. for an automobile, not affected by the road wheels, as when they strike an obstacle side ways, but easily controlled by the hand wheel or steering lever.

Irreversibleness noun The state or quality of being irreversible.

Irreversibly adverb In an irreversible manner.

Irrevocability noun [ Confer French irrévocabilité .] The state or quality of being irrevocable; irrevocableness.

Irrevocable adjective [ Latin irrevocabilis : confer French irrévocable . See In- not, and Revoke , and confer Irrevocable .] Incapable of being recalled or revoked; unchangeable; irreversible; unalterable; as, an irrevocable promise or decree; irrevocable fate.

Firm and irrevocable is my doom.
Shak.

-- Ir*rev"o*ca*ble*ness , noun -- Ir*rev"o*ca*bly , adverb

Irrevokable adjective [ Prefix ir- not + revoke .] Irrevocable. [ R.]

Irrevoluble adjective That has no finite period of revolution; not revolving. [ R.]

The dateless and irrevoluble circle of eternity.
Milton.

Irrhetorical adjective Not rhetorical.

Irrigate transitive verb [ imperfect & past participle Irrigated ; present participle & verbal noun Irrigating .] [ Latin irrigatus , past participle of irrigare to irrigate: ir- in + rigare to water; probably akin to English rain . See Rain .]


1. To water; to wet; to moisten with running or dropping water; to bedew.

2. (Agriculture) To water, as land, by causing a stream to flow upon, over, or through it, as in artificial channels.

Irrigation noun [ Latin irrigatio : confer French irrigation .] The act or process of irrigating, or the state of being irrigated; especially, the operation of causing water to flow over lands, for nourishing plants.

Irriguous adjective [ Latin irriguus . See Irrigate .]


1. Watered; watery; moist; dewy. [ Obsolete]

The flowery lap
Of some irriguous valley spreads her store.
Milton.

2. Gently penetrating or pervading. [ Obsolete] J. Philips.

Irrisible adjective [ Prefix ir- not + risible . See Irrision .] Not risible. [ R.]

Irrision noun [ Latin irrisio , from irridere , irrisum , to laugh at; prefix ir- in + ridere to laugh: confer French irrision .] The act of laughing at another; derision.

This being spoken scepticè , or by way of irrision .
Chapman.

Irritability noun [ Latin irritabilitas : confer French irritabilité .]


1. The state or quality of being irritable; quick excitability; petulance; fretfulness; as, irritability of temper.

2. (Physiol.) A natural susceptibility, characteristic of all living organisms, tissues, and cells, to the influence of certain stimuli, response being manifested in a variety of ways, -- as that quality in plants by which they exhibit motion under suitable stimulation; esp., the property which living muscle possesses, of responding either to a direct stimulus of its substance, or to the stimulating influence of its nerve fibers, the response being indicated by a change of form, or contraction; contractility.

3. (Medicine) A condition of morbid excitability of an organ or part of the body; undue susceptibility to the influence of stimuli. See Irritation , noun , 3.

Irritable adjective [ Latin irritabilis : confer French irritable . See Irritate .]


1. Capable of being irritated.

2. Very susceptible of anger or passion; easily inflamed or exasperated; as, an irritable temper.

Vicious, old, and irritable .
Tennyson.

3. (Physiol.) Endowed with irritability; susceptible of irritation; capable of being excited to action by the application of certain stimuli.

4. (Medicine) Susceptible of irritation; unduly sensitive to irritants or stimuli. See Irritation , noun , 3.

Syn. -- Excitable; irascible; touchy; fretful; peevish.

Irritableness noun Irritability.

Irritably adverb In an irritable manner.