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Pronunciation:  `imbi'silitee

WordNet Dictionary
  1. [n]  a stupid mistake
  2. [n]  retardation more severe than a moron but not as severe as an idiot

IMBECILITY is a 10 letter word that starts with I.


 Synonyms: betise, folly, foolishness, stupidity
 See Also: backwardness, error, fault, mental retardation, mistake, retardation, slowness, subnormality



Webster's 1913 Dictionary
\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

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

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}.

Thesaurus Terms
 Related Terms: amentia, arrested development, asininity, backwardness, battiness, blithering idiocy, brainlessness, buffoonery, clownishness, crackpottedness, crankiness, craziness, cretinism, daffiness, desipience, disability, disablement, disqualification, eccentricity, fatuity, fatuousness, folly, foolery, foolheadedness, foolishness, frivolity, frivolousness, giddiness, goofiness, half-wittedness, idiocy, idiotism, inability, inadequacy, inanity, incapability, incapacitation, incapacity, incompetence, incompetency, inefficiency, ineptitude, infancy, infantilism, inferiority, insanity, insufficiency, legal incapacity, lunacy, madness, mental defectiveness, mental deficiency, mental handicap, mental retardation, mindlessness, minority, mongolianism, mongolism, mongoloid idiocy, moronism, moronity, niaiserie, nugacity, nuttiness, profound idiocy, queerness, retardation, retardment, sappiness, screwiness, senselessness, silliness, simplemindedness, simpleness, simple-wittedness, simplicity, stupidity, subnormality, thoughtlessness, triflingness, triviality, unfitness, wackiness, wardship, weirdness, witlessness, zaniness, zanyism