botch

Synonyms: blow bobble boggle bollix boot bumble bungle butcher distort err fall down flounder flub fumble goof up gum up louse up mar mend mess mess up misapply miscalculate miscompute misconjecture misconstrue mishandle misjudge mismanage muck up muddle muff mutilate patch pull a boner ruin screw up spoil stumble wreck

Antonyms: accomplish achieve do well succeed