Verbseoul.
descriptive

거세다 conjugation (geoseda, to be rough)

To say to be rough politely in the present tense, use 거세요 (guh-sae-yoh) · geoseyo. Below is the full conjugation of 거세다 across the three tenses and three everyday speech levels.

Grammar note (descriptive): Descriptive verbs (형용사) function like adjectives in Korean and conjugate the same way as regular action verbs. They cannot take the progressive -고 있어요 or imperative forms. 좋다 (to be good) → 좋아요; 크다 (to be big) → 커요 (으-irregular).

Conjugation table

pron. = pronunciation guide  · RR = Revised Romanization

TenseCasual (반말)Polite (요)Formal (합니다)
Present
거세
guh-sae
geose
거세요
guh-sae-yoh
geoseyo
거셉니다
guh-saem-nee-dah
geosemnida
Past
거셌어
guh-sae-ssuh
geosesseo
거셌어요
guh-sae-ssuh-yoh
geosesseoyo
거셌습니다
guh-sae-sseum-nee-dah
geosesseumnida
Future
거셀 거야
guh-sael guh-yah
geosel geoya
거셀 거예요
guh-sael guh-yae-yoh
geosel geoyeyo
거셀 겁니다
guh-sael guhm-nee-dah
geosel geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
거세세요
guh-sae-sae-yoh
geoseseyo
Suggestion / Let's Polite (요)
거세요
guh-sae-yoh
geoseyo
Question Polite (요)
거세요?
guh-sae-yoh-?
geoseyo?
Connective "and" — (고)
거세고
guh-sae-goh
geosego
Conditional "if" — (면)
거세면
guh-sae-myuhn
geosemyeon
Progressive (고 있어요)
거세고 있어요
guh-sae-goh ee-ssuh-yoh
geosego isseoyo
Want to (고 싶어요)
거세고 싶어요
guh-sae-goh shee-puh-yoh
geosego sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
거셀 수 있어요
guh-sael soo ee-ssuh-yoh
geosel su isseoyo
Because / So (아/어서)
거세서
guh-sae-suh
geoseseo
Noun form — (기)
거세기
guh-sae-gee
geosegi
Noun form — (음)
거셈
guh-saem
geosem