foul up

UK/faʊl ˈʌp/

verb

To make a mistake, to go wrong.

“You really fouled up this time.”

Similar
mess upfuck upbotchbodgebumblefumblebotch upmuff
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Meanings

verbfoul up (third-person singular simple present fouls up, present participle fouling up, simple past and past participle fouled up)

present singular third person fouls up · participle present fouling up · participle past fouled up · past fouled up

  1. idiomaticintransitiveslangTo make a mistake, to go wrong.

    You really fouled up this time.

    Synonyms: mess up

  2. transitiveTo botch; to make a mess of.

    I fouled up question 3 of the exam.

Synonyms & antonyms

verbTo make a mistake, to go wrong.

Similar
mess up
Similar
fuck up

More synonyms by meaning

verbmake a mess of, destroy or ruin

Similar
botchbodgebumblefumblebotch upmuffblowflubscrew upball upspoilmuck upbunglefluffbollixbollix upbollocksbollocks upbobblemishandle
Broader
failgo wrongmiscarry
Also see
fuck upgoof upgo upmake a mistakemess upmisdomuck upmuddyscrew up

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

foul up. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/foul%20up

MLA

“foul up.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/foul%20up. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “foul up,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/foul%20up.

Source: foul up on Wiktionary, CC BY-SA 4.0.