Verbseoul.
ㅂ irregular (adj)
의심스럽다uisimseureopdato be doubtful, suspicious

To say to be doubtful, suspicious politely in the present tense, use 의심스러워요 (ui-sheem-seu-ruh-wuh-yoh). Below is the full conjugation of 의심스럽다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
의심스러워
ui-sheem-seu-ruh-wuh
의심스러워요
ui-sheem-seu-ruh-wuh-yoh
의심스럽습니다
ui-sheem-seu-ruhp-sseum-nee-dah
Past
의심스러웠어
ui-sheem-seu-ruh-wuh-ssuh
의심스러웠어요
ui-sheem-seu-ruh-wuh-ssuh-yoh
의심스러웠습니다
ui-sheem-seu-ruh-wuh-sseum-nee-dah
Future
의심스러울 거야
ui-sheem-seu-ruh-ool- -guh-yah
의심스러울 거예요
ui-sheem-seu-ruh-ool- -guh-yae-yoh
의심스러울 겁니다
ui-sheem-seu-ruh-ool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
의심스러우세요
ui-sheem-seu-ruh-oo-sae-yoh
Suggestion / Let's Polite (요)
의심스러워요
ui-sheem-seu-ruh-wuh-yoh
Question Polite (요)
의심스러워요?
ui-sheem-seu-ruh-wuh-yoh-?
Connective “and” — (고)
의심스럽고
ui-sheem-seu-ruhp-goh
Conditional “if” — (면)
의심스러우면
ui-sheem-seu-ruh-oo-myuhn
Noun form — (기)
의심스러움
ui-sheem-seu-ruh-oom