Verbseoul.
하다 verb (adj)
경쾌하다gyeongkwaehadalight, nimble

To say light, nimble politely in the present tense, use 경쾌해요 (gyuhng-kwae-hae-yoh). Below is the full conjugation of 경쾌하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
경쾌해
gyuhng-kwae-hae
경쾌해요
gyuhng-kwae-hae-yoh
경쾌합니다
gyuhng-kwae-hahm-nee-dah
Past
경쾌했어
gyuhng-kwae-hae-ssuh
경쾌했어요
gyuhng-kwae-hae-ssuh-yoh
경쾌했습니다
gyuhng-kwae-hae-sseum-nee-dah
Future
경쾌할 거야
gyuhng-kwae-hahl- -guh-yah
경쾌할 거예요
gyuhng-kwae-hahl- -guh-yae-yoh
경쾌할 겁니다
gyuhng-kwae-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
경쾌하세요
gyuhng-kwae-hah-sae-yoh
Suggestion / Let's Polite (요)
경쾌해요
gyuhng-kwae-hae-yoh
Question Polite (요)
경쾌해요?
gyuhng-kwae-hae-yoh-?
Connective “and” — (고)
경쾌하고
gyuhng-kwae-hah-goh
Conditional “if” — (면)
경쾌하면
gyuhng-kwae-hah-myuhn
Noun form — (기)
경쾌함
gyuhng-kwae-hahm