Verbseoul.
regular

앞장서다 conjugation (apjangseoda, to lead, to head, to forerun)

To say to lead, to head, to forerun politely in the present tense, use 앞장서요 (ahp-chahng-suh-yoh) · apjangseoyo. Below is the full conjugation of 앞장서다 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
앞장서
ahp-chahng-suh
apjangseo
앞장서요
ahp-chahng-suh-yoh
apjangseoyo
앞장섭니다
ahp-chahng-suhm-nee-dah
apjangseomnida
Past
앞장섰어
ahp-chahng-suh-ssuh
apjangseosseo
앞장섰어요
ahp-chahng-suh-ssuh-yoh
apjangseosseoyo
앞장섰습니다
ahp-chahng-suh-sseum-nee-dah
apjangseosseumnida
Future
앞장설 거야
ahp-chahng-suhl guh-yah
apjangseol geoya
앞장설 거예요
ahp-chahng-suhl guh-yae-yoh
apjangseol geoyeyo
앞장설 겁니다
ahp-chahng-suhl guhm-nee-dah
apjangseol geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
앞장서세요
ahp-chahng-suh-sae-yoh
apjangseoseyo
Suggestion / Let's Polite (요)
앞장서요
ahp-chahng-suh-yoh
apjangseoyo
Question Polite (요)
앞장서요?
ahp-chahng-suh-yoh-?
apjangseoyo?
Connective "and" — (고)
앞장서고
ahp-chahng-suh-goh
apjangseogo
Conditional "if" — (면)
앞장서면
ahp-chahng-suh-myuhn
apjangseomyeon
Progressive (고 있어요)
앞장서고 있어요
ahp-chahng-suh-goh ee-ssuh-yoh
apjangseogo isseoyo
Want to (고 싶어요)
앞장서고 싶어요
ahp-chahng-suh-goh shee-puh-yoh
apjangseogo sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
앞장설 수 있어요
ahp-chahng-suhl soo ee-ssuh-yoh
apjangseol su isseoyo
Because / So (아/어서)
앞장서서
ahp-chahng-suh-suh
apjangseoseo
Noun form — (기)
앞장서기
ahp-chahng-suh-gee
apjangseogi
Noun form — (음)
앞장섬
ahp-chahng-suhm
apjangseom