Verbseoul.
하다 verb (adj)
불완전하다bulwanjeonhadaincomplete

To say incomplete politely in the present tense, use 불완전해요 (boo-rwahn-chuhn-hae-yoh). Below is the full conjugation of 불완전하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
불완전해
boo-rwahn-chuhn-hae
불완전해요
boo-rwahn-chuhn-hae-yoh
불완전합니다
boo-rwahn-chuhn-hahm-nee-dah
Past
불완전했어
boo-rwahn-chuhn-hae-ssuh
불완전했어요
boo-rwahn-chuhn-hae-ssuh-yoh
불완전했습니다
boo-rwahn-chuhn-hae-sseum-nee-dah
Future
불완전할 거야
boo-rwahn-chuhn-hahl- -guh-yah
불완전할 거예요
boo-rwahn-chuhn-hahl- -guh-yae-yoh
불완전할 겁니다
boo-rwahn-chuhn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
불완전하세요
boo-rwahn-chuhn-hah-sae-yoh
Suggestion / Let's Polite (요)
불완전해요
boo-rwahn-chuhn-hae-yoh
Question Polite (요)
불완전해요?
boo-rwahn-chuhn-hae-yoh-?
Connective “and” — (고)
불완전하고
boo-rwahn-chuhn-hah-goh
Conditional “if” — (면)
불완전하면
boo-rwahn-chuhn-hah-myuhn
Noun form — (기)
불완전함
boo-rwahn-chuhn-hahm