figurative. To blunder, be wrong.

intransitive. To make a stupid and gross mistake in doing anything. to blunder away (trans.): to throw away, lose by blundering: cf. to fool away at…

In various figurative uses. colloquial. intransitive. ? To commit a fatal blunder.

slang. A very great mistake: chiefly in to make a bloomer.

transitive. U.S. colloquial. To make (a foolish mistake), to perpetrate (a blunder).

British colloquial. to drop a brick: to make an indiscreet, awkward, or embarrassing remark; to commit a faux pas.

intransitive. To make a foolish mistake; to blunder.

Originally Services' slang. A serious mistake or blunder, esp. in to put up a black: to make a blunder.

intransitive. To blunder, to make a mistake. Occasionally const. off.

colloquial (originally U.S.). intransitive. To make a (serious) mistake; to blunder; to fail.

British slang (originally and chiefly Military). to drop a bollock: to make a serious mistake. Cf. to drop a brick at brick, n.1 adj.1phrases 7, to…

A mistake, esp. one that attracts attention; a social faux pas. to drop a clanger, to make such a mistake, to ‘slip up’.

colloquial (not in U.S. use). intransitive. To make a (serious) mistake; to blunder; to fail.