KO bugger call off cancel complete cripple de-energize debilitate delete disable disenable dispose of drain drop the curtain end off enfeeble expunge extinguish finalize finish fold up get it over get over with get through with give the quietus hamstring hors de combat inactivate incapacitate kayo kill knock out lame maim perfect polish off put put paid to queer queer the works sabotage scrag shoot down spike unfit weaken wing wipe out wreck zap