Verbseoul.
descriptive

어리석다 conjugation (eoriseokda, stupid, foolish)

To say stupid, foolish politely in the present tense, use 어리석어요 (uh-ree-suh-guh-yoh) · eoriseogeoyo. Below is the full conjugation of 어리석다 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
어리석어
uh-ree-suh-guh
eoriseogeo
어리석어요
uh-ree-suh-guh-yoh
eoriseogeoyo
어리석습니다
uh-ree-suhg-sseum-nee-dah
eoriseoksseumnida
Past
어리석었어
uh-ree-suh-guh-ssuh
eoriseogeosseo
어리석었어요
uh-ree-suh-guh-ssuh-yoh
eoriseogeosseoyo
어리석었습니다
uh-ree-suh-guh-sseum-nee-dah
eoriseogeosseumnida
Future
어리석을 거야
uh-ree-suh-geul guh-yah
eoriseogeul geoya
어리석을 거예요
uh-ree-suh-geul guh-yae-yoh
eoriseogeul geoyeyo
어리석을 겁니다
uh-ree-suh-geul guhm-nee-dah
eoriseogeul geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
어리석으세요
uh-ree-suh-geu-sae-yoh
eoriseogeuseyo
Suggestion / Let's Polite (요)
어리석어요
uh-ree-suh-guh-yoh
eoriseogeoyo
Question Polite (요)
어리석어요?
uh-ree-suh-guh-yoh-?
eoriseogeoyo?
Connective "and" — (고)
어리석고
uh-ree-suhg-ggoh
eoriseokkko
Conditional "if" — (면)
어리석으면
uh-ree-suh-geu-myuhn
eoriseogeumyeon
Progressive (고 있어요)
어리석고 있어요
uh-ree-suhg-ggoh ee-ssuh-yoh
eoriseokkko isseoyo
Want to (고 싶어요)
어리석고 싶어요
uh-ree-suhg-ggoh shee-puh-yoh
eoriseokkko sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
어리석을 수 있어요
uh-ree-suh-geul soo ee-ssuh-yoh
eoriseogeul su isseoyo
Because / So (아/어서)
어리석어서
uh-ree-suh-guh-suh
eoriseogeoseo
Noun form — (기)
어리석기
uh-ree-suhg-ggee
eoriseokkki
Noun form — (음)
어리석음
uh-ree-suh-geum
eoriseogeum