안 마시면

if you don't drink

→ 안
phrase Rare #21,532
if you don't drink The subject is understood from context and can refer to “I,” “you,” or someone else.
KO: 오늘 커피 안 마시면 오후에 졸릴 거야.
EN: If I don't drink coffee today, I'll be sleepy this afternoon.

안 마시면 고맙지

I’d appreciate it if you didn’t drink.

— 카운터페이터 (2007)

안 마시면?

What if I don’t drink?

— A Moment to Remember (2004)

커피 안 마시면 못 가

I can't go without coffee.

— 양철북 (1979)