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