Verbseoul.
하다 verb (adj)
고지식하다gojisikhadato be self-righteous

To say to be self-righteous politely in the present tense, use 고지식해요 (goh-chee-shee-kae-yoh). Below is the full conjugation of 고지식하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
고지식해
goh-chee-shee-kae
고지식해요
goh-chee-shee-kae-yoh
고지식합니다
goh-chee-shee-kahm-nee-dah
Past
고지식했어
goh-chee-shee-kae-ssuh
고지식했어요
goh-chee-shee-kae-ssuh-yoh
고지식했습니다
goh-chee-shee-kae-sseum-nee-dah
Future
고지식할 거야
goh-chee-shee-kahl- -guh-yah
고지식할 거예요
goh-chee-shee-kahl- -guh-yae-yoh
고지식할 겁니다
goh-chee-shee-kahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
고지식하세요
goh-chee-shee-kah-sae-yoh
Suggestion / Let's Polite (요)
고지식해요
goh-chee-shee-kae-yoh
Question Polite (요)
고지식해요?
goh-chee-shee-kae-yoh-?
Connective “and” — (고)
고지식하고
goh-chee-shee-kah-goh
Conditional “if” — (면)
고지식하면
goh-chee-shee-kah-myuhn
Noun form — (기)
고지식함
goh-chee-shee-kahm