Verbseoul.
하다 verb (adj)
순수하다sunsuhadapure, unmixed, genuine

To say pure, unmixed, genuine politely in the present tense, use 순수해요 (soon-soo-hae-yoh). Below is the full conjugation of 순수하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
순수해
soon-soo-hae
순수해요
soon-soo-hae-yoh
순수합니다
soon-soo-hahm-nee-dah
Past
순수했어
soon-soo-hae-ssuh
순수했어요
soon-soo-hae-ssuh-yoh
순수했습니다
soon-soo-hae-sseum-nee-dah
Future
순수할 거야
soon-soo-hahl- -guh-yah
순수할 거예요
soon-soo-hahl- -guh-yae-yoh
순수할 겁니다
soon-soo-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
순수하세요
soon-soo-hah-sae-yoh
Suggestion / Let's Polite (요)
순수해요
soon-soo-hae-yoh
Question Polite (요)
순수해요?
soon-soo-hae-yoh-?
Connective “and” — (고)
순수하고
soon-soo-hah-goh
Conditional “if” — (면)
순수하면
soon-soo-hah-myuhn
Noun form — (기)
순수함
soon-soo-hahm