Verbseoul.
하다 verb (adj)

동일하다 conjugation (dongilhada, the same, identical, equal)

To say the same, identical, equal politely in the present tense, use 동일해요 (dohng-eel-hae-yoh) · dongilhaeyo. Below is the full conjugation of 동일하다 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
동일해
dohng-eel-hae
dongilhae
동일해요
dohng-eel-hae-yoh
dongilhaeyo
동일합니다
dohng-eel-hahm-nee-dah
dongilhamnida
Past
동일했어
dohng-eel-hae-ssuh
dongilhaesseo
동일했어요
dohng-eel-hae-ssuh-yoh
dongilhaesseoyo
동일했습니다
dohng-eel-hae-sseum-nee-dah
dongilhaesseumnida
Future
동일할 거야
dohng-eel-hahl guh-yah
dongilhal geoya
동일할 거예요
dohng-eel-hahl guh-yae-yoh
dongilhal geoyeyo
동일할 겁니다
dohng-eel-hahl guhm-nee-dah
dongilhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
동일하세요
dohng-eel-hah-sae-yoh
dongilhaseyo
Suggestion / Let's Polite (요)
동일해요
dohng-eel-hae-yoh
dongilhaeyo
Question Polite (요)
동일해요?
dohng-eel-hae-yoh-?
dongilhaeyo?
Connective "and" — (고)
동일하고
dohng-eel-hah-goh
dongilhago
Conditional "if" — (면)
동일하면
dohng-eel-hah-myuhn
dongilhamyeon
Progressive (고 있어요)
동일하고 있어요
dohng-eel-hah-goh ee-ssuh-yoh
dongilhago isseoyo
Want to (고 싶어요)
동일하고 싶어요
dohng-eel-hah-goh shee-puh-yoh
dongilhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
동일할 수 있어요
dohng-eel-hahl soo ee-ssuh-yoh
dongilhal su isseoyo
Because / So (아/어서)
동일해서
dohng-eel-hae-suh
dongilhaeseo
Noun form — (기)
동일하기
dohng-eel-hah-gee
dongilhagi
Noun form — (음)
동일함
dohng-eel-hahm
dongilham