1. mess up
If I mess up an exam, I have to study more and take it again.
Don't mess up your hair!
2. bungle
English word "schrzanić coś"(bungle) occurs in sets:
CAE część trzecia3. screw something up
English word "schrzanić coś"(screw something up) occurs in sets:
informal różnice4. drop the ball
English word "schrzanić coś"(drop the ball) occurs in sets:
English idioms5. fluff
"mere rhetorical fluff"
Cull and cut any fluff, add in sub- headings,...
I fluffed when I let you get that job.
6. mess something up