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약이야

it's medicine

→ 약
phrase Rare #29,575
it's medicine Casual form of “it is medicine”; the subject is often omitted when clear from context.
KO: 이건 감기약이야.
EN: This is cold medicine.

무슨 약 이야?

What kind of medicine is it?

— 엘리트 스쿼드 (2007)

약 이야

It’s medicine.

— 당갈 (2016)

아버지를 위한 그 약 이야.

That medicine is for my father.

— 극장판 귀멸의 칼날: 무한성편 (2025)