Verbseoul.
regular
머금다meogeumdato hold/keep something in one's mouth (e.g. water)

To say to hold/keep something in one's mouth (e.g. water) politely in the present tense, use 머금어요 (muh-geu-muh-yoh). Below is the full conjugation of 머금다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
머금어
muh-geu-muh
머금어요
muh-geu-muh-yoh
머금습니다
muh-geum-seum-nee-dah
Past
머금었어
muh-geu-muh-ssuh
머금었어요
muh-geu-muh-ssuh-yoh
머금었습니다
muh-geu-muh-sseum-nee-dah
Future
머금을 거야
muh-geu-meul- -guh-yah
머금을 거예요
muh-geu-meul- -guh-yae-yoh
머금을 겁니다
muh-geu-meul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
머금으세요
muh-geu-meu-sae-yoh
Suggestion / Let's Polite (요)
머금어요
muh-geu-muh-yoh
Question Polite (요)
머금어요?
muh-geu-muh-yoh-?
Connective “and” — (고)
머금고
muh-geum-goh
Conditional “if” — (면)
머금으면
muh-geu-meu-myuhn
Noun form — (기)
머금음
muh-geu-meum