Verbseoul.
descriptive
수많다sumandaTo be many

To say To be many politely in the present tense, use 수많아요 (soo-mahn-ah-yoh). Below is the full conjugation of 수많다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
수많아
soo-mahn-ah
수많아요
soo-mahn-ah-yoh
수많습니다
soo-mahn-seum-nee-dah
Past
수많았어
soo-mahn-ah-ssuh
수많았어요
soo-mahn-ah-ssuh-yoh
수많았습니다
soo-mahn-ah-sseum-nee-dah
Future
수많을 거야
soo-mahn-eul- -guh-yah
수많을 거예요
soo-mahn-eul- -guh-yae-yoh
수많을 겁니다
soo-mahn-eul- -guhm-nee-dah

Other useful forms

Command Polite (세요)
수많으세요
soo-mahn-eu-sae-yoh
Suggestion / Let's Polite (요)
수많아요
soo-mahn-ah-yoh
Question Polite (요)
수많아요?
soo-mahn-ah-yoh-?
Connective “and” — (고)
수많고
soo-mahn-goh
Conditional “if” — (면)
수많으면
soo-mahn-eu-myuhn
Noun form — (기)
수많음
soo-mahn-eum