Verbseoul.
descriptive
열없다yeoleopdacowardly, timid

To say cowardly, timid politely in the present tense, use 열없어요 (yuh-ruhp-ssuh-yoh). Below is the full conjugation of 열없다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
열없어
yuh-ruhp-ssuh
열없어요
yuh-ruhp-ssuh-yoh
열없습니다
yuh-ruhp-seum-nee-dah
Past
열없었어
yuh-ruhp-ssuh-ssuh
열없었어요
yuh-ruhp-ssuh-ssuh-yoh
열없었습니다
yuh-ruhp-ssuh-sseum-nee-dah
Future
열없을 거야
yuh-ruhp-sseul- -guh-yah
열없을 거예요
yuh-ruhp-sseul- -guh-yae-yoh
열없을 겁니다
yuh-ruhp-sseul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
열없으세요
yuh-ruhp-sseu-sae-yoh
Suggestion / Let's Polite (요)
열없어요
yuh-ruhp-ssuh-yoh
Question Polite (요)
열없어요?
yuh-ruhp-ssuh-yoh-?
Connective “and” — (고)
열없고
yuh-ruhp-goh
Conditional “if” — (면)
열없으면
yuh-ruhp-sseu-myuhn
Noun form — (기)
열없음
yuh-ruhp-sseum