doing in

Verb

do in (third-person singular simple present does in, present participle doing in, simple past did in, past participle done in)

1. (colloquial, transitive) To kill or end; to defeat.
   • By the eighth mile, I was sure that finishing the 10-mile hike would do me in.

   Synonyms:

   bump off, do away with, feague, annihilate, bag, baptize, bereave of life, blight, bring down, bury

2. (colloquial, transitive) To exhaust, to tire out.
   • I’m off to bed. I’m completely done in.
3. (colloquial, transitive) To damage or injure.
   • I’m off work at the moment; I’ve done my back in.
4. (dated, slang, transitive) To rob (someone); to steal or pilfer from (someone).
5. (colloquial, transitive) To eat.
   • I can do in a dozen eggs.