Verbseoul.
하다 verb (adj)

강퍅하다 conjugation (gangpyakhada, to be headstrong)

To say to be headstrong politely in the present tense, use 강퍅해요 (gahng-pyah-kae-yoh) · gangpyakaeyo. Below is the full conjugation of 강퍅하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb (adj)): 하다 adjectives use the same verb 하다 as a suffix to turn descriptive nouns into predicates (행복하다 = to be happy). They conjugate identically to 하다 verbs: the 하 contracts before -아/-어 suffixes to give 해. 행복해요, 행복했어요, 행복합니다. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
강퍅해
gahng-pyah-kae
gangpyakae
강퍅해요
gahng-pyah-kae-yoh
gangpyakaeyo
강퍅합니다
gahng-pyah-kahm-nee-dah
gangpyakamnida
Past
강퍅했어
gahng-pyah-kae-ssuh
gangpyakaesseo
강퍅했어요
gahng-pyah-kae-ssuh-yoh
gangpyakaesseoyo
강퍅했습니다
gahng-pyah-kae-sseum-nee-dah
gangpyakaesseumnida
Future
강퍅할 거야
gahng-pyah-kahl guh-yah
gangpyakal geoya
강퍅할 거예요
gahng-pyah-kahl guh-yae-yoh
gangpyakal geoyeyo
강퍅할 겁니다
gahng-pyah-kahl guhm-nee-dah
gangpyakal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
강퍅하세요
gahng-pyah-kah-sae-yoh
gangpyakaseyo
Suggestion / Let's Polite (요)
강퍅해요
gahng-pyah-kae-yoh
gangpyakaeyo
Question Polite (요)
강퍅해요?
gahng-pyah-kae-yoh-?
gangpyakaeyo?
Connective "and" — (고)
강퍅하고
gahng-pyah-kah-goh
gangpyakago
Conditional "if" — (면)
강퍅하면
gahng-pyah-kah-myuhn
gangpyakamyeon
Progressive (고 있어요)
강퍅하고 있어요
gahng-pyah-kah-goh ee-ssuh-yoh
gangpyakago isseoyo
Want to (고 싶어요)
강퍅하고 싶어요
gahng-pyah-kah-goh shee-puh-yoh
gangpyakago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
강퍅할 수 있어요
gahng-pyah-kahl soo ee-ssuh-yoh
gangpyakal su isseoyo
Because / So (아/어서)
강퍅해서
gahng-pyah-kae-suh
gangpyakaeseo
Noun form — (기)
강퍅하기
gahng-pyah-kah-gee
gangpyakagi
Noun form — (음)
강퍅함
gahng-pyah-kahm
gangpyakam