Verbseoul.
ㄹ stem (adj)
드물다deumuldato be rare

To say to be rare politely in the present tense, use 드물어요 (deu-moo-ruh-yoh). Below is the full conjugation of 드물다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
드물어
deu-moo-ruh
드물어요
deu-moo-ruh-yoh
드뭅니다
deu-moom-nee-dah
Past
드물었어
deu-moo-ruh-ssuh
드물었어요
deu-moo-ruh-ssuh-yoh
드물었습니다
deu-moo-ruh-sseum-nee-dah
Future
드물 거야
deu-mool- -guh-yah
드물 거예요
deu-mool- -guh-yae-yoh
드물 겁니다
deu-mool- -guhm-nee-dah

Other useful forms

Command Polite (세요)
드무세요
deu-moo-sae-yoh
Suggestion / Let's Polite (요)
드물어요
deu-moo-ruh-yoh
Question Polite (요)
드물어요?
deu-moo-ruh-yoh-?
Connective “and” — (고)
드물고
deu-mool-goh
Conditional “if” — (면)
드물면
deu-mool-myuhn
Noun form — (기)
드묾
deu-moom