down for the count
Defeated, finished, doomed, as in I doubt if he'll ever leave the hospital; his illness really has him down for the count. This expression alludes to the losing boxer, unable to get to his feet before the umpire has counted to ten (the count). [1920s]
Words nearby down for the count
down and dirty,
down and out,
down card,
down cold, have,
down east,
down for the count,
down in the dumps,
down on,
down on one's luck,
down one's alley,
down one's neck