Synonyms for Fuckup (same or very similar meaning)
WordNet sense 1 (someone who makes mistakes because of incompetence):
blunderer, botcher, bumbler, bungler, butcher, fumbler, stumbler, sad sackWordNet sense 2 (an embarrassing mistake):
bloomer, blooper, blunder, botch, bungle, flub, foul-up, pratfall, boo-booFrom the ODE community, based on WordNetadd/edit