1. goof up - Noun
2. goof up - Verb
(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.
I tried to fix it, but I think I just goofed it up some more.
goof-up (plural goof-ups)
(slang) A mistake or problem.
The letter they sent was a goof-up; it was intended for someone else.
goof-up
However, she quoted the wrong year ‘1919’ WW2 and made a big goof-up. Source: Internet
But the damage was already done as his followers slammed him for the latest goof-up as Polish people are referred to as the Poles. Source: Internet
Here’s a look at Deavan’s latest Instagram goof-up. Source: Internet