|part of speech:
||(informal) to bungle or make serious mistakes, or cause someone else to do so.
- bungle, flub, goof, muff
||by improper, inept, or malicious behavior, to cause (someone or something) to be confused, distressed, or inefficient.
He fouled up the accounting system.You fouled me up by making me wait for you.
- goof up, mess up, muck up, muddle
- similar words:
- botch, bungle, hash, trip
||miss, perplex, queer, sabotage, trip