Verbseoul.
regular

떠나다 conjugation (tteonada, to leave)

To say to leave politely in the present tense, use 떠나요 (ttuh-nah-yoh) · tteonayo. Below is the full conjugation of 떠나다 across the three tenses and three everyday speech levels.

Grammar note (regular): Regular verbs and adjectives conjugate predictably. Before 어-series suffixes, vowels may contract (가 + 아 → 가, 보 + 아 → 봐), but no consonant in the stem changes. If the final vowel of the stem is ㅏ or ㅗ, use 아; otherwise use 어. Consonant-final stems: 먹 + 어 → 먹어; vowel-final: 가 + 아 → 가.

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

TenseCasual (반말)Polite (요)Formal (합니다)
Present
떠나
ttuh-nah
tteona
떠나요
ttuh-nah-yoh
tteonayo
떠납니다
ttuh-nahm-nee-dah
tteonamnida
Past
떠났어
ttuh-nah-ssuh
tteonasseo
떠났어요
ttuh-nah-ssuh-yoh
tteonasseoyo
떠났습니다
ttuh-nah-sseum-nee-dah
tteonasseumnida
Future
떠날 거야
ttuh-nahl guh-yah
tteonal geoya
떠날 거예요
ttuh-nahl guh-yae-yoh
tteonal geoyeyo
떠날 겁니다
ttuh-nahl guhm-nee-dah
tteonal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
떠나세요
ttuh-nah-sae-yoh
tteonaseyo
Suggestion / Let's Polite (요)
떠나요
ttuh-nah-yoh
tteonayo
Question Polite (요)
떠나요?
ttuh-nah-yoh-?
tteonayo?
Connective "and" — (고)
떠나고
ttuh-nah-goh
tteonago
Conditional "if" — (면)
떠나면
ttuh-nah-myuhn
tteonamyeon
Progressive (고 있어요)
떠나고 있어요
ttuh-nah-goh ee-ssuh-yoh
tteonago isseoyo
Want to (고 싶어요)
떠나고 싶어요
ttuh-nah-goh shee-puh-yoh
tteonago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
떠날 수 있어요
ttuh-nahl soo ee-ssuh-yoh
tteonal su isseoyo
Because / So (아/어서)
떠나서
ttuh-nah-suh
tteonaseo
Noun form — (기)
떠나기
ttuh-nah-gee
tteonagi
Noun form — (음)
떠남
ttuh-nahm
tteonam