Verbseoul.
하다 verb (adj)

어벙하다 conjugation (eobeonghada, to be dumbish, to be stupidish)

To say to be dumbish, to be stupidish politely in the present tense, use 어벙해요 (uh-buhng-hae-yoh) · eobeonghaeyo. Below is the full conjugation of 어벙하다 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
어벙해
uh-buhng-hae
eobeonghae
어벙해요
uh-buhng-hae-yoh
eobeonghaeyo
어벙합니다
uh-buhng-hahm-nee-dah
eobeonghamnida
Past
어벙했어
uh-buhng-hae-ssuh
eobeonghaesseo
어벙했어요
uh-buhng-hae-ssuh-yoh
eobeonghaesseoyo
어벙했습니다
uh-buhng-hae-sseum-nee-dah
eobeonghaesseumnida
Future
어벙할 거야
uh-buhng-hahl guh-yah
eobeonghal geoya
어벙할 거예요
uh-buhng-hahl guh-yae-yoh
eobeonghal geoyeyo
어벙할 겁니다
uh-buhng-hahl guhm-nee-dah
eobeonghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
어벙하세요
uh-buhng-hah-sae-yoh
eobeonghaseyo
Suggestion / Let's Polite (요)
어벙해요
uh-buhng-hae-yoh
eobeonghaeyo
Question Polite (요)
어벙해요?
uh-buhng-hae-yoh-?
eobeonghaeyo?
Connective "and" — (고)
어벙하고
uh-buhng-hah-goh
eobeonghago
Conditional "if" — (면)
어벙하면
uh-buhng-hah-myuhn
eobeonghamyeon
Progressive (고 있어요)
어벙하고 있어요
uh-buhng-hah-goh ee-ssuh-yoh
eobeonghago isseoyo
Want to (고 싶어요)
어벙하고 싶어요
uh-buhng-hah-goh shee-puh-yoh
eobeonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
어벙할 수 있어요
uh-buhng-hahl soo ee-ssuh-yoh
eobeonghal su isseoyo
Because / So (아/어서)
어벙해서
uh-buhng-hae-suh
eobeonghaeseo
Noun form — (기)
어벙하기
uh-buhng-hah-gee
eobeonghagi
Noun form — (음)
어벙함
uh-buhng-hahm
eobeongham