botch_up
1. [ verb ] make a mess of, destroy or ruin
Synonyms: louse_up spoil fuck_up flub muck_up foul_up mess_up blunder bollocks_up mishandle blow bumble bungle fumble fluff bobble bollix screw_up bollix_up bollocks ball_up muff botch
Examples:

"I botched the dinner and we had to eat out" "the pianist screwed up the difficult passage in the second movement"

Related terms: fail blurt_out blunder spoil bungler fluff ballup screwup