지 마세요: Korean 'Don't' Grammar, from Signs to Song Lyrics

지 마세요 is Korean's polite way to say "don't": verb stem + 지 말다, conjugated to 마세요. Drop the 요 for casual 지 마 (하지 마! — every K-drama argument ever), or go formal with 지 마십시오 for signs and announcements. It's a command, not a suggestion. For a softer "you don't have to," reach for 지 않으셔도 돼요 instead.

Every Korean class teaches 지 마세요 as "don't do that" and moves on inside five minutes. That undersells it. This one ending does three different jobs depending on which syllable you keep or cut, and mixing them up is how the blunt "NO PHOTOS" sign in a museum ends up sounding, once you can actually read it, exactly as blunt in Korean as it looks in English. Once you can hear the difference between 지 마, 지 마세요, and 지 마십시오, half the prohibition signs in Korea stop being decoration and start being legible.

How 지 마세요 is built

The mechanics: verb stem + 지 말다. 말다 means "to stop, to refrain from," and you conjugate it, not the main verb. 가다 (go) becomes 가지 말다, and because 말다 ends in ㄹ, that ㄹ disappears in front of 세요 — the same rule that turns 살다 into 사세요. That's why it's 가지 마세요, never 가지 말세요.

Reading Korea's prohibition signs

Public signs run on the same formality ladder, and the register tells you who's talking. A café taping a note to its door writes 반려동물 출입하지 마세요 — soft, service-industry polite, basically an apology with a rule attached. A museum placard next to a sculpture writes 만지지 마시오 — blunter, no 요, the kind of ending nobody says out loud to a friend's face. A government sign on a hiking trail goes full formal: 지정된 구역을 벗어나지 마십시오. None of these registers is rude. Written Korean simply defaults colder and more clipped than spoken Korean ever does, which is worth knowing before you assume a sign is yelling at you.

Command or suggestion? 지 마세요 vs 지 않으셔도 돼요

This is the swap learners never get taught, and it changes the entire meaning. 지 마세요 forbids something — the other person doesn't get a choice. 지 않으셔도 돼요 ("you don't have to") releases them from an obligation — they still get to decide. Confuse the two and you can accidentally fire someone from a dinner invitation.

One sentence quietly excludes a coworker. The other one is a kindness. The verb and the object are identical — only the ending changes the entire social meaning of the sentence, which is a very Korean thing for grammar to do. If you want the full landscape of "have to / don't have to," the companion piece on 아/어야 돼요 covers the obligation side directly.

걱정하지 마: the comfort phrase

걱정하지 마(세요) is the most reassuring sentence in Korean, and it technically breaks its own grammar. 지 마세요 is built to forbid an action — but worrying isn't an action anyone can just stop on command. Koreans say it anyway, the same way English says "don't worry" to someone mid-spiral, knowing full well they can't just flip a switch. It works because it stopped being an instruction generations ago. It's comfort, wearing the grammar of a command.