Verbseoul.
descriptive
어리석다eoriseokdastupid, foolish

To say stupid, foolish politely in the present tense, use 어리석어요 (uh-ree-suh-guh-yoh). Below is the full conjugation of 어리석다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
어리석어
uh-ree-suh-guh
어리석어요
uh-ree-suh-guh-yoh
어리석습니다
uh-ree-suhg-sseum-nee-dah
Past
어리석었어
uh-ree-suh-guh-ssuh
어리석었어요
uh-ree-suh-guh-ssuh-yoh
어리석었습니다
uh-ree-suh-guh-sseum-nee-dah
Future
어리석을 거야
uh-ree-suh-geul- -guh-yah
어리석을 거예요
uh-ree-suh-geul- -guh-yae-yoh
어리석을 겁니다
uh-ree-suh-geul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
어리석으세요
uh-ree-suh-geu-sae-yoh
Suggestion / Let's Polite (요)
어리석어요
uh-ree-suh-guh-yoh
Question Polite (요)
어리석어요?
uh-ree-suh-guh-yoh-?
Connective “and” — (고)
어리석고
uh-ree-suhg-ggoh
Conditional “if” — (면)
어리석으면
uh-ree-suh-geu-myuhn
Noun form — (기)
어리석음
uh-ree-suh-geum