Verbseoul.
하다 verb (adj)

불규칙하다 conjugation (bulgyuchikhada, irregular)

To say irregular politely in the present tense, use 불규칙해요 (bool-gyoo-chee-kae-yoh) · bulgyuchikaeyo. Below is the full conjugation of 불규칙하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb (adj)): 하다 adjectives use the same verb 하다 as a suffix to turn descriptive nouns into predicates (행복하다 = to be happy). They conjugate identically to 하다 verbs: the 하 contracts before -아/-어 suffixes to give 해. 행복해요, 행복했어요, 행복합니다. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
불규칙해
bool-gyoo-chee-kae
bulgyuchikae
불규칙해요
bool-gyoo-chee-kae-yoh
bulgyuchikaeyo
불규칙합니다
bool-gyoo-chee-kahm-nee-dah
bulgyuchikamnida
Past
불규칙했어
bool-gyoo-chee-kae-ssuh
bulgyuchikaesseo
불규칙했어요
bool-gyoo-chee-kae-ssuh-yoh
bulgyuchikaesseoyo
불규칙했습니다
bool-gyoo-chee-kae-sseum-nee-dah
bulgyuchikaesseumnida
Future
불규칙할 거야
bool-gyoo-chee-kahl guh-yah
bulgyuchikal geoya
불규칙할 거예요
bool-gyoo-chee-kahl guh-yae-yoh
bulgyuchikal geoyeyo
불규칙할 겁니다
bool-gyoo-chee-kahl guhm-nee-dah
bulgyuchikal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
불규칙하세요
bool-gyoo-chee-kah-sae-yoh
bulgyuchikaseyo
Suggestion / Let's Polite (요)
불규칙해요
bool-gyoo-chee-kae-yoh
bulgyuchikaeyo
Question Polite (요)
불규칙해요?
bool-gyoo-chee-kae-yoh-?
bulgyuchikaeyo?
Connective "and" — (고)
불규칙하고
bool-gyoo-chee-kah-goh
bulgyuchikago
Conditional "if" — (면)
불규칙하면
bool-gyoo-chee-kah-myuhn
bulgyuchikamyeon
Progressive (고 있어요)
불규칙하고 있어요
bool-gyoo-chee-kah-goh ee-ssuh-yoh
bulgyuchikago isseoyo
Want to (고 싶어요)
불규칙하고 싶어요
bool-gyoo-chee-kah-goh shee-puh-yoh
bulgyuchikago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
불규칙할 수 있어요
bool-gyoo-chee-kahl soo ee-ssuh-yoh
bulgyuchikal su isseoyo
Because / So (아/어서)
불규칙해서
bool-gyoo-chee-kae-suh
bulgyuchikaeseo
Noun form — (기)
불규칙하기
bool-gyoo-chee-kah-gee
bulgyuchikagi
Noun form — (음)
불규칙함
bool-gyoo-chee-kahm
bulgyuchikam