Verbseoul.
하다 verb

패전하다 conjugation (paejeonhada, to lose, to be defeated (in a war or sporting event))

To say to lose, to be defeated (in a war or sporting event) politely in the present tense, use 패전해요 (pae-chuhn-hae-yoh) · paejeonhaeyo. Below is the full conjugation of 패전하다 across the three tenses and three everyday speech levels.

Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

Highlighted = where the stem changes

TenseCasual (반말)Polite (요)Formal (합니다)
Present
패전해
pae-chuhn-hae
paejeonhae
패전해요
pae-chuhn-hae-yoh
paejeonhaeyo
패전합니다
pae-chuhn-hahm-nee-dah
paejeonhamnida
Past
패전했어
pae-chuhn-hae-ssuh
paejeonhaesseo
패전했어요
pae-chuhn-hae-ssuh-yoh
paejeonhaesseoyo
패전했습니다
pae-chuhn-hae-sseum-nee-dah
paejeonhaesseumnida
Future
패전할 거야
pae-chuhn-hahl guh-yah
paejeonhal geoya
패전할 거예요
pae-chuhn-hahl guh-yae-yoh
paejeonhal geoyeyo
패전할 겁니다
pae-chuhn-hahl guhm-nee-dah
paejeonhal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
패전하세요
pae-chuhn-hah-sae-yoh
paejeonhaseyo
Suggestion / Let's Polite (요)
패전해요
pae-chuhn-hae-yoh
paejeonhaeyo
Question Polite (요)
패전해요?
pae-chuhn-hae-yoh-?
paejeonhaeyo?
Connective "and" — (고)
패전하고
pae-chuhn-hah-goh
paejeonhago
Conditional "if" — (면)
패전하면
pae-chuhn-hah-myuhn
paejeonhamyeon
Progressive (고 있어요)
패전하고 있어요
pae-chuhn-hah-goh ee-ssuh-yoh
paejeonhago isseoyo
Want to (고 싶어요)
패전하고 싶어요
pae-chuhn-hah-goh shee-puh-yoh
paejeonhago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
패전할 수 있어요
pae-chuhn-hahl soo ee-ssuh-yoh
paejeonhal su isseoyo
Because / So (아/어서)
패전해서
pae-chuhn-hae-suh
paejeonhaeseo
Noun form — (기)
패전하기
pae-chuhn-hah-gee
paejeonhagi
Noun form — (음)
패전함
pae-chuhn-hahm
paejeonham