do in

verb

1. to murder or kill

2. to exhaust

Idioms and Phrases

Tire out, exhaust, as in Running errands all day did me in . [ Colloquial ; early 1900s] Also see done in .

Kill, as in Mystery writers are always thinking of new ways to do their characters in . [ Slang ; early 1900s] Also see def. 4.

Ruin utterly; also cheat or swindle. For example, The five-alarm fire did in the whole block , or His so-called friend really did him in . [First half of 1900s]

do oneself in . Commit suicide, as in She was always threatening to do herself in . [ Slang ; first half of 1900s]