Verbseoul.
하다 verb (adj)

완전하다 conjugation (wanjeonhada, complete, full, perfect)

To say complete, full, perfect politely in the present tense, use 완전해요 (wahn-chuhn-hae-yoh) · wanjeonhaeyo. Below is the full conjugation of 완전하다 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
완전해
wahn-chuhn-hae
wanjeonhae
완전해요
wahn-chuhn-hae-yoh
wanjeonhaeyo
완전합니다
wahn-chuhn-hahm-nee-dah
wanjeonhamnida
Past
완전했어
wahn-chuhn-hae-ssuh
wanjeonhaesseo
완전했어요
wahn-chuhn-hae-ssuh-yoh
wanjeonhaesseoyo
완전했습니다
wahn-chuhn-hae-sseum-nee-dah
wanjeonhaesseumnida
Future
완전할 거야
wahn-chuhn-hahl guh-yah
wanjeonhal geoya
완전할 거예요
wahn-chuhn-hahl guh-yae-yoh
wanjeonhal geoyeyo
완전할 겁니다
wahn-chuhn-hahl guhm-nee-dah
wanjeonhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
완전하세요
wahn-chuhn-hah-sae-yoh
wanjeonhaseyo
Suggestion / Let's Polite (요)
완전해요
wahn-chuhn-hae-yoh
wanjeonhaeyo
Question Polite (요)
완전해요?
wahn-chuhn-hae-yoh-?
wanjeonhaeyo?
Connective "and" — (고)
완전하고
wahn-chuhn-hah-goh
wanjeonhago
Conditional "if" — (면)
완전하면
wahn-chuhn-hah-myuhn
wanjeonhamyeon
Progressive (고 있어요)
완전하고 있어요
wahn-chuhn-hah-goh ee-ssuh-yoh
wanjeonhago isseoyo
Want to (고 싶어요)
완전하고 싶어요
wahn-chuhn-hah-goh shee-puh-yoh
wanjeonhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
완전할 수 있어요
wahn-chuhn-hahl soo ee-ssuh-yoh
wanjeonhal su isseoyo
Because / So (아/어서)
완전해서
wahn-chuhn-hae-suh
wanjeonhaeseo
Noun form — (기)
완전하기
wahn-chuhn-hah-gee
wanjeonhagi
Noun form — (음)
완전함
wahn-chuhn-hahm
wanjeonham