(ˈ)dü|in transitive verb
1.
a. : to bring about the defeat or destruction of : inflict great injury upon : ruin
an agent sent to do in the current government — Herbert Gold
the stock-market crash did him in — Thomas Whiteside
b. : to bring about the death of : kill
after twice trying to do him in with gas — Alexander Woollcott
c. : to bring almost to the point of exhaustion : wear out
would see I was done in and tell me to stop working — Frank Sargeson
2. : to take in : cheat
one feels as though one has been somehow swindled and done in — Aldous Huxley