bollix up

to make or do (something) in a clumsy or unskillful way you've bollixed up the whole thing Synonyms blow, bobble, boggle, botch (up), boot, bugger (up), bumble, bungle, butcher, dub, flub, fluff, foozle, foul up, fumble, goof (up), louse up, mangle, mess (up), muck up, muff, murder, screw upRelated Words blunder, gum (up), muddle, piffle; blemish, blight, damage, flaw, harm, hurt, impair, injure, mar, mutilate, ruin, spoil, vitiate; destroy, wreck; mishandle, mismanageNear Antonyms ameliorate, better, enhance, help, improve, meliorate, rectify, refine, reform, remedy; doctor, fix, patch, recondition, renovate, repair, revamp