imbecility

(ĭm'bə-sĭl'ĭ-tē)

1. 1. Great stupidity or foolishness.
   2. Something, such as conduct or an act, that is stupid or foolish.
2. Psychology. The state or condition of being an imbecile; moderate or severe mental retardation.

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noun

Foolish behavior: absurdity, folly, foolery, foolishness, idiocy, insanity, lunacy, madness, nonsense, preposterousness, senselessness, silliness, tomfoolery, zaniness. Informal craziness. See ability/inability.

n.

A kind of divine inspiration, or sacred fire affecting censorious critics of this dictionary.

A state of mind in which an animal does feeble, weak, absurd things and does not respond to usual environmental stimuli. Usually congenital. See also hydranencephaly, encephalopathy.