Noun imbecility has 2 senses
- imbecility - retardation more severe than a moron but not as severe as an idiot
--1 is a kind of retardation, mental retardation, backwardness, slowness, subnormality
- stupidity, betise, folly, foolishness, imbecility - a stupid mistake
--2 is a kind of mistake, error, fault
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