foul up

== English == === Pronunciation === (Received Pronunciation) IPA(key): /faʊl ˈʌp/; compare: foul-up. === Verb === foul up (third-person singular simple present fouls up, present participle fouling up, simple past and past participle fouled up) (intransitive, slang, idiomatic) To make a mistake, to go wrong. (transitive) To botch; to make a mess of. ==== Synonyms ==== (make a mistake): mess up, fuck up (vulgar); see also Thesaurus:make a mistake (botch): mess up, fuck up (vulgar) ==== Derived terms ==== foul-up