Verbseoul.
하다 verb
흥하다heunghadato thrive, flourish, prosper

To say to thrive, flourish, prosper politely in the present tense, use 흥해요 (heung-hae-yoh). Below is the full conjugation of 흥하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
흥해
heung-hae
흥해요
heung-hae-yoh
흥합니다
heung-hahm-nee-dah
Past
흥했어
heung-hae-ssuh
흥했어요
heung-hae-ssuh-yoh
흥했습니다
heung-hae-sseum-nee-dah
Future
흥할 거야
heung-hahl- -guh-yah
흥할 거예요
heung-hahl- -guh-yae-yoh
흥할 겁니다
heung-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
흥하세요
heung-hah-sae-yoh
Suggestion / Let's Polite (요)
흥해요
heung-hae-yoh
Question Polite (요)
흥해요?
heung-hae-yoh-?
Connective “and” — (고)
흥하고
heung-hah-goh
Conditional “if” — (면)
흥하면
heung-hah-myuhn
Noun form — (기)
흥함
heung-hahm