Verbseoul.
하다 verb

항의하다 conjugation (hanguihada, to protest, to complain)

To say to protest, to complain politely in the present tense, use 항의해요 (hahng-ui-hae-yoh) · hanguihaeyo. Below is the full conjugation of 항의하다 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
항의해
hahng-ui-hae
hanguihae
항의해요
hahng-ui-hae-yoh
hanguihaeyo
항의합니다
hahng-ui-hahm-nee-dah
hanguihamnida
Past
항의했어
hahng-ui-hae-ssuh
hanguihaesseo
항의했어요
hahng-ui-hae-ssuh-yoh
hanguihaesseoyo
항의했습니다
hahng-ui-hae-sseum-nee-dah
hanguihaesseumnida
Future
항의할 거야
hahng-ui-hahl guh-yah
hanguihal geoya
항의할 거예요
hahng-ui-hahl guh-yae-yoh
hanguihal geoyeyo
항의할 겁니다
hahng-ui-hahl guhm-nee-dah
hanguihal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
항의하세요
hahng-ui-hah-sae-yoh
hanguihaseyo
Suggestion / Let's Polite (요)
항의해요
hahng-ui-hae-yoh
hanguihaeyo
Question Polite (요)
항의해요?
hahng-ui-hae-yoh-?
hanguihaeyo?
Connective "and" — (고)
항의하고
hahng-ui-hah-goh
hanguihago
Conditional "if" — (면)
항의하면
hahng-ui-hah-myuhn
hanguihamyeon
Progressive (고 있어요)
항의하고 있어요
hahng-ui-hah-goh ee-ssuh-yoh
hanguihago isseoyo
Want to (고 싶어요)
항의하고 싶어요
hahng-ui-hah-goh shee-puh-yoh
hanguihago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
항의할 수 있어요
hahng-ui-hahl soo ee-ssuh-yoh
hanguihal su isseoyo
Because / So (아/어서)
항의해서
hahng-ui-hae-suh
hanguihaeseo
Noun form — (기)
항의하기
hahng-ui-hah-gee
hanguihagi
Noun form — (음)
항의함
hahng-ui-hahm
hanguiham