-지 말다

V+ 지 말다 It indicates you stop others from doing something. (Don’t~, Let’s not~)

It is used in propositve or imperative sentence forms: 마요(말아요), 마세요, 말아 주세요, 말래요?, 말까요?, 맙시다, 마십시오, 말자… (This grammar is also covered in each suggesting and imperative ending page.)

여기에 쓰레기를 버리지 마세요.

Please do not throw garbage here.

도서관에서 통화하지 마십시오.

Please do not talk on the phone in the library.

쉬지 말고 일하세요.

Don't rest, but work.

→ Although -지 말다 is not directly combined with an imperative closing ending here, the whole sentence is a command. This pattern means “Don’t do the first action, and instead do the second action.”