Verbseoul.
regular
늘어나다neuleonadato expand or increase in numbers

To say to expand or increase in numbers politely in the present tense, use 늘어나요 (neu-ruh-nah-yoh). Below is the full conjugation of 늘어나다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
늘어나
neu-ruh-nah
늘어나요
neu-ruh-nah-yoh
늘어납니다
neu-ruh-nahm-nee-dah
Past
늘어났어
neu-ruh-nah-ssuh
늘어났어요
neu-ruh-nah-ssuh-yoh
늘어났습니다
neu-ruh-nah-sseum-nee-dah
Future
늘어날 거야
neu-ruh-nahl- -guh-yah
늘어날 거예요
neu-ruh-nahl- -guh-yae-yoh
늘어날 겁니다
neu-ruh-nahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
늘어나세요
neu-ruh-nah-sae-yoh
Suggestion / Let's Polite (요)
늘어나요
neu-ruh-nah-yoh
Question Polite (요)
늘어나요?
neu-ruh-nah-yoh-?
Connective “and” — (고)
늘어나고
neu-ruh-nah-goh
Conditional “if” — (면)
늘어나면
neu-ruh-nah-myuhn
Noun form — (기)
늘어남
neu-ruh-nahm