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Not sound; not whole; not solid; defective; infirm; diseased. -- Un*sound"ly, adv. -- Un*sound"ness, n.

Anything inflated, empty, or unsound. "To swim with bladders of philosophy." Rochester. Bladder nut, or Bladder tree (Bot.), a genus of plants (Staphylea) with bladderlike seed pods. -- Bladder pod (Bot.), a genus of low herbs (Vesicaria) with inflated seed pods. -- Bladdor senna (Bot.), a genus of shrubs (Colutea),…

Changed from a sound to a putrid state; spoiled; tainted; vitiated; unsound. Who with such corrupt and pestilent bread would feed them. Knolles.

Insane; mad; of unsound mind. -- De*ment"ed*ness, n.

To sleep imperfectly or unsoundly; to slumber; to be heavy with sleepiness; to doze. "He drowsed upon his couch." South. In the pool drowsed the cattle up to their knees. Lowell.

Hollow or unsound at the core; treacherous; deceitful; perfidious. Bacon. -- False"*heart`ed*ness, n. Bp. Stillingfleet.

Insincerity; unsoundness; treachery. South.

The state of being infirm; feebleness; an imperfection or weakness; esp., an unsound, unhealthy, or debilitated state; a disease; a malady; as, infirmity of body or mind. 'T is the infirmity of his age. Shak.

Exhibiting unsoundness or disorded of mind; not sane; mad; deranged in mind; delirious; distracted. See Insanity, 2.

To render unsound; to make mad. [Obs.] Feltham.

The state of being insane; unsoundness or derangement of mind; madness; lunacy. All power of fancy overreason is a degree of insanity. Johnson. Without grace The heart's insanity admits no cure. Cowper.

Disappointing; imperfect; unsound. [Obs.] To render sleep's soft blessings insincere. Pope.

it, etc.; the fluid part which separates from meat in cooking. An animal whose juices are unsound. Arbuthnot. The juice of July flowers. B. Jonson. The juice of Egypt's grape. Shak. Letters which Edward Digby wrote in lemon juice. Macaulay. Cold water draws the juice of meat. Mrs. Whitney.

of reason, -- formerly supposed to be influenced by the changes of the moon; any form of unsoundness of mind, except idiocy; mental derangement or alienation. Brande. Burrill. Your kindred shuns your house As beaten hence by your strange lunacy. Shak.

cted by lunacy; an insane person, esp. one who has lucid intervals; a madman; a person of unsound mind. The lunatic, the lover, and the poet, Are of imagination all compact. Shak.

Crazy; mentally unsound. [Written also loony.] [Law, U.S.]

A kind of mental unsoundness characterized by extreme depression of spirits, ill-grounded fears, delusions, and brooding over one particular subject or train of ideas.

Great and continued depression of spirits, amounting to mental unsoundness; melancholia.

Unsound; not perfect; as, a person of nonsane memory. Blackstone.

Beginning; commencement. [Obs.] Doubting sad end of principle unsound. Spenser.