낙인찍어요 · 낙인찍었어요 · 낙인찍을 거예요 · 낙인찍으세요
to brand, to stigmatize, to label
Example
사람들은 그를 배신자로 낙인찍었어요.
People branded him a traitor.
Word parts
낙 brand+인 seal
Literally 'press a branding iron': marking someone with a lasting stigma.
Good to know
Pattern: A를 B(으)로 낙인찍다. The passive 낙인찍히다 is very common.