Question 1

What does "goof up" mean?

Accepted Answer

To make a careless or silly mistake.

Question 2

How do you use "goof up" in a sentence?

Accepted Answer

I totally goofed up — I sent the email to the wrong person.

Question 3

Is "goof up" formal or informal?

Accepted Answer

"goof up" is informal — used mainly in casual conversation. Primarily American English. Implies an error that is more careless or accidental than serious. Can be used both transitively ('goof up the project') and intransitively ('I really goofed up'). The tone is usually self-deprecating or humorous.

goof up

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