foul up

1 to make or do (something) in a clumsy or unskillful way tried not to foul up the football play Synonyms blow, bobble, boggle, bollix (up), boot, bugger (up), bumble, bungle, butcher, dub, flub, fluff, foozle, botch, 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

2 to make a mistake unfortunately, I fouled up and in my e-mail gave everyone the wrong date for the meeting Synonyms blunder, boob [British], flub, fluff, err, fumble, goof (up), louse up, mess (up), screw up, slip up, stumble, tripRelated Words nod; bobble, botch, bungle, butcher, foozle, mangle, mishandle, muff, murder; miscalculate, misconceive, miscount, miscue, misdeem, misgauge, misjudge, mistake; misconstrue, misinterpret, misunderstand