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To last; to endure; to remain unimpaired. If the malt be not thoroughly dried, the ale it makes will not keep. Mortimer.

To weaken or impair. [R.]

To endure use, or continue in existence, without impairment or exhaustion; as, this cloth lasts better than that; the fuel will last through the winter.

Not quite sound or normal; somewhat impaired or deranged; dizzy; giddy. Are his wits safe Is he not light of brain Shak.

Having impaired polarity; -- applied to a compass needle. [Colloq.] Like mad, like a mad person; in a furious manner; as, to run like mad. L'Estrange. -- To run mad. (a) To become wild with excitement. (b) To run wildly about under the influence of hydrophobia; to become affected with hydrophobia. -- To run mad after…

To mutilate; to cripple; to injure; to disable; to impair. My late maimed limbs lack wonted might. Spenser. You maimed the jurisdiction of all bishops. Shak.

Any disease of the human body; a distemper, disorder, or indisposition, proceeding from impaired, defective, or morbid organic functions; especially, a lingering or deep-seated disorder. The maladies of the body may prove medicines to the mind. Buckminster.

To make defective; to do injury to, esp. by cutting off or defacing a part; to impair; to disfigure; to deface. I pray you mar no more trees with wiring love songs in their barks. Shak. But mirth is marred, and the good cheer is lost. Dryden. Ire, envy, and despair Which marred all his borrowed visage. Milton.…

Somewhat deranged in mind; having the jugment impaired. [Obs.] Bp. Reynolds.

A temporary blindness, or impairment of sight, said to be caused by sleeping in the moonlight; -- sometimes called nyctalopia.

A condition of nervous debility supposed to be dependent upon impairment in the functions of the spinal cord.

To impair. [Obs.] Spenser.

One who impairs. [Obs.] Wyclif.

Impairment. [Obs.] Wyclif.

Fig.: To unnerve; to destroy or impair the energy of; to render ineffective; as, the occurrence paralyzed the community; despondency paralyzed his efforts.

Artificial digestion of food for use in illness or impaired digestion.

ces, or by previous bias of the mind; hence, generally, to hurt; to damage; to injure; to impair; as, to prejudice a good cause. Seek how may prejudice the foe. Shak

Tending to obstruct or impair; hurtful; injurious; disadvantageous; detrimental. Hooker. His going away . . . was most prejudicial and most ruinous to the king's affairs. Clarendon. -- Prej`u*di"cial*ly, adv. -- Prej`u*di"cial*ness, n.

lation that affects an agreement, contract, law, grant, or the like; as, the contract was impaired by its proviso. He doth deny his prisoners, But with proviso and exception. Shak.

(Med.), forms of nervous disease in which, while the senses of sight and hearing remain unimpaired, the mind fails to appreciate the significance of the sounds heard or the images seen. -- Psychical contagion, the transference of disease, especially of a functional nervous disease, by mere force of example. -- Psychi…