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Ignorant or negligent of the rules of logic or correct reasoning; as, an illogical disputant; contrary of the rules of logic or sound reasoning; as, an illogical inference. -- Il*log"ic*al*ly, adv. -- Il*log"ic*al*ness, n.

To make plain or clear; to dispel the obscurity to by knowledge or reason; to explain; to elucidate; as, to illuminate a text, a problem, or a duty.

es, surfaces, etc. (Geom.), points, lines, surfaces, etc., imagined to exist, although by reason of certain changes of a figure they have in fact ceased to have a real existence.

Unreasonably suspicious; jealous. [Obs.] Chaucer. -- Im*ag"i*na*tive*ly, adv. -- Im*ag"i*na*tive*ness, n.

Not moderate; exceeding just or usual and suitable bounds; excessive; extravagant; unreasonable; as, immoderate demands; immoderate grief; immoderate laughter. So every scope by the immoderate use Turns to restraint. Shak.

Inaccessible, as to knowledge, reason, sympathy, etc.; unimpressible; not to be moved by arguments or motives; as, an impenetrable mind, or heart. They will be credulous in all affairs of life, but impenetrable by a sermon of the gospel. Jer. Taylor.

gance; haughtiness. Imperiousness and severity is but an ill way of treating men who have reason of their own to guide them. Locke.

Impertinence. [R.] O, matter and impertinency mixed! Reason in madness! Shak.

him, . . . the act of hiring implies an obligation and a promise that he shall pay him a reasonable reward for his services. Blackstone.

Troublesomely urgent; unreasonably solicitous; overpressing in request or demand; urgent; teasing; as, an impotunate petitioner, curiosity. Whewell.

To request or solicit, with urgency; to press with frequent, unreasonable, or troublesome application or pertinacity; hence, to tease; to irritate; to worry. Their ministers and residents here have perpetually importuned the court with unreasonable demands. Swift.

Not to be overcome, presuaded, or controlled by any reasonable method; unmanageable; intractable; not capable of being easily dealt with; -- used in a general sense, as applied to a person or thing that is difficult to control or get along with. This though, impracticable heart Is governed by a dainty-fingered girl. Ro…

To impregnate; to make fruitful. [Obs.] His perniciousss words, impregned With reason. Milton. Semele doth Bacchus bear Impregned of Jove. Dr. H. More.

t on, external authority; self- evidencing; obvious. The imprescriptible laws of the pure reason. Colerridge.

To disprove or make void; to refute. [Obs.] Neither can any of them make so strong a reason which another can not improve. Tyndale.

as of a doctrine, principle, or theory, stated in a discourse. "A good improvement of his reason." S. Clarke. I shall make some improvement of this doctrine. Tillotson.

ynonym of Because, and cf. For as much as, under For, prep. -- In that, because; for the reason that. "Some things they do in that they are men . . . ; some things in that they are men misled and blinded with error." Hooker. -- In the name of, in behalf of; on the part of; by authority; as, it was done in the name of…

ic; biting. "An incisive, high voice." G. Eliot. And her incisive smile accrediting That treason of false witness in my blush. Mrs. Browning.

To comprehend or comprise, as a genus the species, the whole a part, an argument or reason the inference; to contain; to embrace; as, this volume of Shakespeare includes his sonnets; he was included in the invitation to the family; to and including page twenty-five. The whole included race, his purposed prey. Milton. T…

Want of thought, or of the power of thinking; thoughtlessness; unreasonableness. 'T is folly and incogitancy to argue anything, one way or the other, from the designs of a sort of beings with whom we so little communicate. Glanvill.