Verbseoul.
하다 verb (adj)
환하다hwanhadabright, light, radiant

To say bright, light, radiant politely in the present tense, use 환해요 (hwahn-hae-yoh). Below is the full conjugation of 환하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
환해
hwahn-hae
환해요
hwahn-hae-yoh
환합니다
hwahn-hahm-nee-dah
Past
환했어
hwahn-hae-ssuh
환했어요
hwahn-hae-ssuh-yoh
환했습니다
hwahn-hae-sseum-nee-dah
Future
환할 거야
hwahn-hahl- -guh-yah
환할 거예요
hwahn-hahl- -guh-yae-yoh
환할 겁니다
hwahn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
환하세요
hwahn-hah-sae-yoh
Suggestion / Let's Polite (요)
환해요
hwahn-hae-yoh
Question Polite (요)
환해요?
hwahn-hae-yoh-?
Connective “and” — (고)
환하고
hwahn-hah-goh
Conditional “if” — (면)
환하면
hwahn-hah-myuhn
Noun form — (기)
환함
hwahn-hahm