im·be·cil·i·ty /ˌɪmbəˈsɪləti/
 低能,愚鈍,愚蠢的言行
 im·be·cil·i·ty /ˌɪmbəˈsɪlətɪ/ 名詞
 成蟲
 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.
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 imbecility
      n 1: retardation more severe than a moron but not as severe as an
           idiot
      2: a stupid mistake [syn: stupidity, betise, folly, foolishness]