(slang) To make a mistake.
If I go near a skateboard, I'm sure I'm just going to goof up and fall off.
(transitive, slang) To introduce problems to or damage through incompetence.
Add your own interpretation of "goof up".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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Browse all slang words starting with G.
I tried to fix it, but I think I just goofed it up some more.