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성내다 conjugation (seongnaeda, to be angry)

To say to be angry politely in the present tense, use 성내요 (suhng-nae-yoh) · seongnaeyo. Below is the full conjugation of 성내다 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
성내
suhng-nae
seongnae
성내요
suhng-nae-yoh
seongnaeyo
성냅니다
suhng-naem-nee-dah
seongnaemnida
Past
성냈어
suhng-nae-ssuh
seongnaesseo
성냈어요
suhng-nae-ssuh-yoh
seongnaesseoyo
성냈습니다
suhng-nae-sseum-nee-dah
seongnaesseumnida
Future
성낼 거야
suhng-nael guh-yah
seongnael geoya
성낼 거예요
suhng-nael guh-yae-yoh
seongnael geoyeyo
성낼 겁니다
suhng-nael guhm-nee-dah
seongnael geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
성내세요
suhng-nae-sae-yoh
seongnaeseyo
Suggestion / Let's Polite (요)
성내요
suhng-nae-yoh
seongnaeyo
Question Polite (요)
성내요?
suhng-nae-yoh-?
seongnaeyo?
Connective "and" — (고)
성내고
suhng-nae-goh
seongnaego
Conditional "if" — (면)
성내면
suhng-nae-myuhn
seongnaemyeon
Progressive (고 있어요)
성내고 있어요
suhng-nae-goh ee-ssuh-yoh
seongnaego isseoyo
Want to (고 싶어요)
성내고 싶어요
suhng-nae-goh shee-puh-yoh
seongnaego sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
성낼 수 있어요
suhng-nael soo ee-ssuh-yoh
seongnael su isseoyo
Because / So (아/어서)
성내서
suhng-nae-suh
seongnaeseo
Noun form — (기)
성내기
suhng-nae-gee
seongnaegi
Noun form — (음)
성냄
suhng-naem
seongnaem