Verbseoul.
르 irregular (adj)
올바르다olbareudato be proper

To say to be proper politely in the present tense, use 올발라요 (ohl-bahl-rah-yoh). Below is the full conjugation of 올바르다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
올발라
ohl-bahl-rah
올발라요
ohl-bahl-rah-yoh
올바릅니다
ohl-bah-reum-nee-dah
Past
올발랐어
ohl-bahl-rah-ssuh
올발랐어요
ohl-bahl-rah-ssuh-yoh
올발랐습니다
ohl-bahl-rah-sseum-nee-dah
Future
올바를 거야
ohl-bah-reul- -guh-yah
올바를 거예요
ohl-bah-reul- -guh-yae-yoh
올바를 겁니다
ohl-bah-reul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
올바르세요
ohl-bah-reu-sae-yoh
Suggestion / Let's Polite (요)
올발라요
ohl-bahl-rah-yoh
Question Polite (요)
올발라요?
ohl-bahl-rah-yoh-?
Connective “and” — (고)
올바르고
ohl-bah-reu-goh
Conditional “if” — (면)
올바르면
ohl-bah-reu-myuhn
Noun form — (기)
올바름
ohl-bah-reum