fuck up

fuck (something) up

1. to do something very badly. I asked you to buy some milk and bread — how could you fuck that up?

2. to damage something. He made a number of bad decisions and really fucked up the company.

See also: fuck

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fuck up someone

1. to harm someone. Then he got into drugs and fucked himself up.

2. to upset someone very much. She's been really fucked up since her parents' divorce.

See also: fuck