(uncountable) The property of being stupid. / (countable) An act that is stupid.

Lacking in intelligence or exhibiting the quality of having been done by someone lacking in intelligence. / To the point of stupor. / (archaic) Characterized by or in a state of stupor; paralysed.

(slang) Extremely.

A stupid person; a fool. / (colloquial, uncountable) The condition or state of being stupid; stupidity, stupidness.

comparative form of stupid: more stupid

plural of stupidness

plural of stupidity

(uncountable, rare) The quality or state of being stupid. / (countable, rare) The result or product of being stupid.

plural of stupid / (slang, humorous, with definite article) Stupidity; an instance of foolishness.

One's lack of intelligence may be judged by one's actions.