망쳐요 · 망쳤어요 · 망칠 거예요 · 망친 (+noun)
to ruin, spoil, mess up
Example
감기 때문에 중요한 시험을 망쳤어요.
I messed up an important exam because of a cold.
Word parts
Probably linked to 망하다 'to go to ruin, go bankrupt'.
Good to know
Everyday collocations: 시험을 망치다 'bomb a test', 분위기를 망치다 'kill the mood'.
Related words