조심해야

must be careful, should be cautious

→ 조심하다
조심 Careful!, watch out! + 해야 do; perform
verb · informal Rare #28,960
must be careful, should be cautious This form is used with a following verb such as 되다 or 하다 to express that one must or should be careful.
KO: 밤길에는 조심해야 해요.
EN: You should be careful on dark streets.
Conjugation of 조심하다
Necessitative
조심해야

조심해야 돼요

You have to be careful

— 물랑루즈 (2001)