Verbseoul.
하다 verb

확정하다 conjugation (hwakjeonghada, to decide)

To say to decide politely in the present tense, use 확정해요 (hwahg-chuhng-hae-yoh) · hwakjeonghaeyo. Below is the full conjugation of 확정하다 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

TenseCasual (반말)Polite (요)Formal (합니다)
Present
확정해
hwahg-chuhng-hae
hwakjeonghae
확정해요
hwahg-chuhng-hae-yoh
hwakjeonghaeyo
확정합니다
hwahg-chuhng-hahm-nee-dah
hwakjeonghamnida
Past
확정했어
hwahg-chuhng-hae-ssuh
hwakjeonghaesseo
확정했어요
hwahg-chuhng-hae-ssuh-yoh
hwakjeonghaesseoyo
확정했습니다
hwahg-chuhng-hae-sseum-nee-dah
hwakjeonghaesseumnida
Future
확정할 거야
hwahg-chuhng-hahl guh-yah
hwakjeonghal geoya
확정할 거예요
hwahg-chuhng-hahl guh-yae-yoh
hwakjeonghal geoyeyo
확정할 겁니다
hwahg-chuhng-hahl guhm-nee-dah
hwakjeonghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
확정하세요
hwahg-chuhng-hah-sae-yoh
hwakjeonghaseyo
Suggestion / Let's Polite (요)
확정해요
hwahg-chuhng-hae-yoh
hwakjeonghaeyo
Question Polite (요)
확정해요?
hwahg-chuhng-hae-yoh-?
hwakjeonghaeyo?
Connective "and" — (고)
확정하고
hwahg-chuhng-hah-goh
hwakjeonghago
Conditional "if" — (면)
확정하면
hwahg-chuhng-hah-myuhn
hwakjeonghamyeon
Progressive (고 있어요)
확정하고 있어요
hwahg-chuhng-hah-goh ee-ssuh-yoh
hwakjeonghago isseoyo
Want to (고 싶어요)
확정하고 싶어요
hwahg-chuhng-hah-goh shee-puh-yoh
hwakjeonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
확정할 수 있어요
hwahg-chuhng-hahl soo ee-ssuh-yoh
hwakjeonghal su isseoyo
Because / So (아/어서)
확정해서
hwahg-chuhng-hae-suh
hwakjeonghaeseo
Noun form — (기)
확정하기
hwahg-chuhng-hah-gee
hwakjeonghagi
Noun form — (음)
확정함
hwahg-chuhng-hahm
hwakjeongham