Verbseoul.
하다 verb (adj)
순진하다sunjinhadainnocent, naïve

To say innocent, naïve politely in the present tense, use 순진해요 (soon-cheen-hae-yoh). Below is the full conjugation of 순진하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
순진해
soon-cheen-hae
순진해요
soon-cheen-hae-yoh
순진합니다
soon-cheen-hahm-nee-dah
Past
순진했어
soon-cheen-hae-ssuh
순진했어요
soon-cheen-hae-ssuh-yoh
순진했습니다
soon-cheen-hae-sseum-nee-dah
Future
순진할 거야
soon-cheen-hahl- -guh-yah
순진할 거예요
soon-cheen-hahl- -guh-yae-yoh
순진할 겁니다
soon-cheen-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
순진하세요
soon-cheen-hah-sae-yoh
Suggestion / Let's Polite (요)
순진해요
soon-cheen-hae-yoh
Question Polite (요)
순진해요?
soon-cheen-hae-yoh-?
Connective “and” — (고)
순진하고
soon-cheen-hah-goh
Conditional “if” — (면)
순진하면
soon-cheen-hah-myuhn
Noun form — (기)
순진함
soon-cheen-hahm