Synonyms of imbecility

Noun

1. imbecility, retardation, mental retardation, backwardness, slowness, subnormality

usage: retardation more severe than a moron but not as severe as an idiot

2. stupidity, betise, folly, foolishness, imbecility, mistake, error, fault

usage: a stupid mistake

Definition and meaning of imbecility (Dictionary)