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-(으)면 안 되다

Used to express prohibition, meaning that one is not allowed to do a certain action. Literally translates to 'If you do..., it is not acceptable'.

Summary

Equivalent

May not / Not allowed to

Also: -지 마세요 (Please do not - prohibition request)

Example

You are not allowed to touch the paintings in the art gallery.

미술관에서 그림을 만지면 됩니다.

Grammar rules

  • Attach '으면 안 되다' to a stem ending in a consonant, and '면 안 되다' to a stem ending in a vowel or ㄹ.
  • It is often used to answer 'No' to a permission request ('-아/어도 돼요?').

    사진을 찍어도 돼요? -> 아니요, 사진을 찍으면 안 돼요. (May I take photos? -> No, you may not take photos.)

Patterns

1

Verbs (Consonant)

Present · Verb Stem + 으면 안 되다

2

Verbs (Vowel/ㄹ)

Present · Verb Stem (drop ㄹ) + 면 안 되다

Example sentences

You are not allowed to touch the paintings in the art gallery.

미술관에서 그림을 만지면 됩니다.

You may not talk loudly in the library.

도서관에서 크게 이야기하면 돼요.

You must not be late for class.

수업 시간에 늦으면 돼요.

Conversation

A: May I smoke here?

여기에 담배를 피워도 돼요?

B: No, you may not smoke.

아니요, 담배를 피우면 돼요.

Practice

Fill in the blank

Select the correct form to express prohibition.

Rules.

Eating.