Verbseoul.
regular
넓히다neolhidato expand, to widen

To say to expand, to widen politely in the present tense, use 넓혀요 (nuhl-hyuh-yoh). Below is the full conjugation of 넓히다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
넓혀
nuhl-hyuh
넓혀요
nuhl-hyuh-yoh
넓힙니다
nuhl-heem-nee-dah
Past
넓혔어
nuhl-hyuh-ssuh
넓혔어요
nuhl-hyuh-ssuh-yoh
넓혔습니다
nuhl-hyuh-sseum-nee-dah
Future
넓힐 거야
nuhl-heel- -guh-yah
넓힐 거예요
nuhl-heel- -guh-yae-yoh
넓힐 겁니다
nuhl-heel- -guhm-nee-dah

Other useful forms

Command Polite (세요)
넓히세요
nuhl-hee-sae-yoh
Suggestion / Let's Polite (요)
넓혀요
nuhl-hyuh-yoh
Question Polite (요)
넓혀요?
nuhl-hyuh-yoh-?
Connective “and” — (고)
넓히고
nuhl-hee-goh
Conditional “if” — (면)
넓히면
nuhl-hee-myuhn
Noun form — (기)
넓힘
nuhl-heem