n. 低能, 愚钝, 愚蠢言行

[医] 痴愚, 愚钝

Imbecility \Im`be*cil"i*ty\, n.; pl. {Imbecilities}. [L.
imbecillitas: cf. F. imb['e]cillit['e].]
The quality of being imbecile; weakness; feebleness, esp. of
mind.

Cruelty . . . argues not only a depravedness of nature,
but also a meanness of courage and imbecility of mind.
--Sir W.
Temple.

Note: This term is used specifically to denote natural
weakness of the mental faculties, affecting one's power
to act reasonably or intelligently.

Syn: Debility; infirmity; weakness; feebleness; impotence.
See {Debility}.