Verbseoul.
하다 verb (adj)
온화하다onhwahadato be gentle, to be affable

To say to be gentle, to be affable politely in the present tense, use 온화해요 (ohn-hwah-hae-yoh). Below is the full conjugation of 온화하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
온화해
ohn-hwah-hae
온화해요
ohn-hwah-hae-yoh
온화합니다
ohn-hwah-hahm-nee-dah
Past
온화했어
ohn-hwah-hae-ssuh
온화했어요
ohn-hwah-hae-ssuh-yoh
온화했습니다
ohn-hwah-hae-sseum-nee-dah
Future
온화할 거야
ohn-hwah-hahl- -guh-yah
온화할 거예요
ohn-hwah-hahl- -guh-yae-yoh
온화할 겁니다
ohn-hwah-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
온화하세요
ohn-hwah-hah-sae-yoh
Suggestion / Let's Polite (요)
온화해요
ohn-hwah-hae-yoh
Question Polite (요)
온화해요?
ohn-hwah-hae-yoh-?
Connective “and” — (고)
온화하고
ohn-hwah-hah-goh
Conditional “if” — (면)
온화하면
ohn-hwah-hah-myuhn
Noun form — (기)
온화함
ohn-hwah-hahm