Verbseoul.
하다 verb

결석하다 conjugation (gyeolseokhada, to be absent)

To say to be absent politely in the present tense, use 결석해요 (gyuhl-suh-kae-yoh) · gyeolseokaeyo. Below is the full conjugation of 결석하다 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
결석해
gyuhl-suh-kae
gyeolseokae
결석해요
gyuhl-suh-kae-yoh
gyeolseokaeyo
결석합니다
gyuhl-suh-kahm-nee-dah
gyeolseokamnida
Past
결석했어
gyuhl-suh-kae-ssuh
gyeolseokaesseo
결석했어요
gyuhl-suh-kae-ssuh-yoh
gyeolseokaesseoyo
결석했습니다
gyuhl-suh-kae-sseum-nee-dah
gyeolseokaesseumnida
Future
결석할 거야
gyuhl-suh-kahl guh-yah
gyeolseokal geoya
결석할 거예요
gyuhl-suh-kahl guh-yae-yoh
gyeolseokal geoyeyo
결석할 겁니다
gyuhl-suh-kahl guhm-nee-dah
gyeolseokal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
결석하세요
gyuhl-suh-kah-sae-yoh
gyeolseokaseyo
Suggestion / Let's Polite (요)
결석해요
gyuhl-suh-kae-yoh
gyeolseokaeyo
Question Polite (요)
결석해요?
gyuhl-suh-kae-yoh-?
gyeolseokaeyo?
Connective "and" — (고)
결석하고
gyuhl-suh-kah-goh
gyeolseokago
Conditional "if" — (면)
결석하면
gyuhl-suh-kah-myuhn
gyeolseokamyeon
Progressive (고 있어요)
결석하고 있어요
gyuhl-suh-kah-goh ee-ssuh-yoh
gyeolseokago isseoyo
Want to (고 싶어요)
결석하고 싶어요
gyuhl-suh-kah-goh shee-puh-yoh
gyeolseokago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
결석할 수 있어요
gyuhl-suh-kahl soo ee-ssuh-yoh
gyeolseokal su isseoyo
Because / So (아/어서)
결석해서
gyuhl-suh-kae-suh
gyeolseokaeseo
Noun form — (기)
결석하기
gyuhl-suh-kah-gee
gyeolseokagi
Noun form — (음)
결석함
gyuhl-suh-kahm
gyeolseokam