Behavior like that of an idiot; great foolishness or stupidity
(Music) A diminishing of tempo; a retard.
A congenital condition caused by a deficiency of thyroid hormone during prenatal development and characterized by small stature, intellectual disability, dystrophy of the bones, and a low basal metabolism.
The quality or condition of being stupid.
The definition of insanity is having a serious mental illness or being extremely foolish.
A costly undertaking having an absurd or ruinous outcome.
Foolish behavior or a foolish action
The definition of lunacy is the state of being insane or wild foolishness.
Extravagant foolishness or frivolity:
A stupid or foolish act or remark.
Find another word for imbecility. In this page you can discover 21 synonyms, antonyms, idiomatic expressions, and related words for imbecility, like: foolishness, idiocy, silliness, absurdity, moronity, retardation, cretinism, stupidity, insanity, folly and foolery.