im·be·cil·i·ty /ˌɪmbəˈsɪlətɪ/ 名詞
Im·be·cil·i·ty n.; pl. Imbecilities 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.
n 1: retardation more severe than a moron but not as severe as an
2: a stupid mistake [syn: stupidity, betise, folly, foolishness]