Verbseoul.
하다 verb

경축하다 conjugation (gyeongchukhada, to celebrate)

To say to celebrate politely in the present tense, use 경축해요 (gyuhng-choo-kae-yoh) · gyeongchukaeyo. Below is the full conjugation of 경축하다 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
경축해
gyuhng-choo-kae
gyeongchukae
경축해요
gyuhng-choo-kae-yoh
gyeongchukaeyo
경축합니다
gyuhng-choo-kahm-nee-dah
gyeongchukamnida
Past
경축했어
gyuhng-choo-kae-ssuh
gyeongchukaesseo
경축했어요
gyuhng-choo-kae-ssuh-yoh
gyeongchukaesseoyo
경축했습니다
gyuhng-choo-kae-sseum-nee-dah
gyeongchukaesseumnida
Future
경축할 거야
gyuhng-choo-kahl guh-yah
gyeongchukal geoya
경축할 거예요
gyuhng-choo-kahl guh-yae-yoh
gyeongchukal geoyeyo
경축할 겁니다
gyuhng-choo-kahl guhm-nee-dah
gyeongchukal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
경축하세요
gyuhng-choo-kah-sae-yoh
gyeongchukaseyo
Suggestion / Let's Polite (요)
경축해요
gyuhng-choo-kae-yoh
gyeongchukaeyo
Question Polite (요)
경축해요?
gyuhng-choo-kae-yoh-?
gyeongchukaeyo?
Connective "and" — (고)
경축하고
gyuhng-choo-kah-goh
gyeongchukago
Conditional "if" — (면)
경축하면
gyuhng-choo-kah-myuhn
gyeongchukamyeon
Progressive (고 있어요)
경축하고 있어요
gyuhng-choo-kah-goh ee-ssuh-yoh
gyeongchukago isseoyo
Want to (고 싶어요)
경축하고 싶어요
gyuhng-choo-kah-goh shee-puh-yoh
gyeongchukago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
경축할 수 있어요
gyuhng-choo-kahl soo ee-ssuh-yoh
gyeongchukal su isseoyo
Because / So (아/어서)
경축해서
gyuhng-choo-kae-suh
gyeongchukaeseo
Noun form — (기)
경축하기
gyuhng-choo-kah-gee
gyeongchukagi
Noun form — (음)
경축함
gyuhng-choo-kahm
gyeongchukam