Verbseoul.
하다 verb
끽연하다kkikyeonhadato smoke

To say to smoke politely in the present tense, use 끽연해요 (ggee-gyuhn-hae-yoh). Below is the full conjugation of 끽연하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
끽연해
ggee-gyuhn-hae
끽연해요
ggee-gyuhn-hae-yoh
끽연합니다
ggee-gyuhn-hahm-nee-dah
Past
끽연했어
ggee-gyuhn-hae-ssuh
끽연했어요
ggee-gyuhn-hae-ssuh-yoh
끽연했습니다
ggee-gyuhn-hae-sseum-nee-dah
Future
끽연할 거야
ggee-gyuhn-hahl- -guh-yah
끽연할 거예요
ggee-gyuhn-hahl- -guh-yae-yoh
끽연할 겁니다
ggee-gyuhn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
끽연하세요
ggee-gyuhn-hah-sae-yoh
Suggestion / Let's Polite (요)
끽연해요
ggee-gyuhn-hae-yoh
Question Polite (요)
끽연해요?
ggee-gyuhn-hae-yoh-?
Connective “and” — (고)
끽연하고
ggee-gyuhn-hah-goh
Conditional “if” — (면)
끽연하면
ggee-gyuhn-hah-myuhn
Noun form — (기)
끽연함
ggee-gyuhn-hahm