0 to spoil something completely, or do something very badly:
I really prepared for the interview because I didn't want to muck it up.
I mucked up the whole test!
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
NEW WORDS
European
May 10, 2021
WORD OF THE DAY
Shimmer
muck sth up