결정해
gyuhl-chuhng-hae
gyeoljeonghae
결정하다
To say to decide something, to make a decision politely in the present tense, use 결정해요 (gyuhl-chuhng-hae-yoh) · gyeoljeonghaeyo. Below is the full conjugation of 결정하다 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 | 결정해요 gyuhl-chuhng-hae-yoh gyeoljeonghaeyo | 결정합니다 gyuhl-chuhng-hahm-nee-dah gyeoljeonghamnida | |
| Past | 결정했어 gyuhl-chuhng-hae-ssuh gyeoljeonghaesseo | 결정했어요 gyuhl-chuhng-hae-ssuh-yoh gyeoljeonghaesseoyo | 결정했습니다 gyuhl-chuhng-hae-sseum-nee-dah gyeoljeonghaesseumnida |
| Future | 결정할 거야 gyuhl-chuhng-hahl guh-yah gyeoljeonghal geoya | 결정할 거예요 gyuhl-chuhng-hahl guh-yae-yoh gyeoljeonghal geoyeyo | 결정할 겁니다 gyuhl-chuhng-hahl guhm-nee-dah gyeoljeonghal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
결정하세요
gyuhl-chuhng-hah-sae-yoh
gyeoljeonghaseyo
Suggestion / Let's Polite (요)
결정해요
gyuhl-chuhng-hae-yoh
gyeoljeonghaeyo
Question Polite (요)
결정해요?
gyuhl-chuhng-hae-yoh-?
gyeoljeonghaeyo?
Connective "and" — (고)
결정하고
gyuhl-chuhng-hah-goh
gyeoljeonghago
Conditional "if" — (면)
결정하면
gyuhl-chuhng-hah-myuhn
gyeoljeonghamyeon
Progressive (고 있어요)
결정하고 있어요
gyuhl-chuhng-hah-goh ee-ssuh-yoh
gyeoljeonghago isseoyo
Want to (고 싶어요)
결정하고 싶어요
gyuhl-chuhng-hah-goh shee-puh-yoh
gyeoljeonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
결정할 수 있어요
gyuhl-chuhng-hahl soo ee-ssuh-yoh
gyeoljeonghal su isseoyo
Because / So (아/어서)
결정해서
gyuhl-chuhng-hae-suh
gyeoljeonghaeseo
Noun form — (기)
결정하기
gyuhl-chuhng-hah-gee
gyeoljeonghagi
Noun form — (음)
결정함
gyuhl-chuhng-hahm
gyeoljeongham