주의해
choo-ui-hae
juuihae
주의하다
To say to watch out politely in the present tense, use 주의해요 (choo-ui-hae-yoh) · juuihaeyo. Below is the full conjugation of 주의하다 across the three tenses and three everyday speech levels.
Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →
Conjugation table
pron. = pronunciation guide · RR = Revised Romanization
Highlighted = where the stem changes
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 주의해요 choo-ui-hae-yoh juuihaeyo | 주의합니다 choo-ui-hahm-nee-dah juuihamnida | |
| Past | 주의했어 choo-ui-hae-ssuh juuihaesseo | 주의했어요 choo-ui-hae-ssuh-yoh juuihaesseoyo | 주의했습니다 choo-ui-hae-sseum-nee-dah juuihaesseumnida |
| Future | 주의할 거야 choo-ui-hahl guh-yah juuihal geoya | 주의할 거예요 choo-ui-hahl guh-yae-yoh juuihal geoyeyo | 주의할 겁니다 choo-ui-hahl guhm-nee-dah juuihal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
주의하세요
choo-ui-hah-sae-yoh
juuihaseyo
Suggestion / Let's Polite (요)
주의해요
choo-ui-hae-yoh
juuihaeyo
Question Polite (요)
주의해요?
choo-ui-hae-yoh-?
juuihaeyo?
Connective "and" — (고)
주의하고
choo-ui-hah-goh
juuihago
Conditional "if" — (면)
주의하면
choo-ui-hah-myuhn
juuihamyeon
Progressive (고 있어요)
주의하고 있어요
choo-ui-hah-goh ee-ssuh-yoh
juuihago isseoyo
Want to (고 싶어요)
주의하고 싶어요
choo-ui-hah-goh shee-puh-yoh
juuihago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
주의할 수 있어요
choo-ui-hahl soo ee-ssuh-yoh
juuihal su isseoyo
Because / So (아/어서)
주의해서
choo-ui-hae-suh
juuihaeseo
Noun form — (기)
주의하기
choo-ui-hah-gee
juuihagi
Noun form — (음)
주의함
choo-ui-hahm
juuiham