Verbseoul.
ㅂ irregular (adj)
두렵다duryeopdato be fearful, to be scared

To say to be fearful, to be scared politely in the present tense, use 두려워요 (doo-ryuh-wuh-yoh). Below is the full conjugation of 두렵다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
두려워
doo-ryuh-wuh
두려워요
doo-ryuh-wuh-yoh
두렵습니다
doo-ryuhp-sseum-nee-dah
Past
두려웠어
doo-ryuh-wuh-ssuh
두려웠어요
doo-ryuh-wuh-ssuh-yoh
두려웠습니다
doo-ryuh-wuh-sseum-nee-dah
Future
두려울 거야
doo-ryuh-ool- -guh-yah
두려울 거예요
doo-ryuh-ool- -guh-yae-yoh
두려울 겁니다
doo-ryuh-ool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
두려우세요
doo-ryuh-oo-sae-yoh
Suggestion / Let's Polite (요)
두려워요
doo-ryuh-wuh-yoh
Question Polite (요)
두려워요?
doo-ryuh-wuh-yoh-?
Connective “and” — (고)
두렵고
doo-ryuhp-goh
Conditional “if” — (면)
두려우면
doo-ryuh-oo-myuhn
Noun form — (기)
두려움
doo-ryuh-oom