Verbseoul.
하다 verb (adj)
서운하다seounhadato be upset, regretful

To say to be upset, regretful politely in the present tense, use 서운해요 (suh-oon-hae-yoh). Below is the full conjugation of 서운하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
서운해
suh-oon-hae
서운해요
suh-oon-hae-yoh
서운합니다
suh-oon-hahm-nee-dah
Past
서운했어
suh-oon-hae-ssuh
서운했어요
suh-oon-hae-ssuh-yoh
서운했습니다
suh-oon-hae-sseum-nee-dah
Future
서운할 거야
suh-oon-hahl- -guh-yah
서운할 거예요
suh-oon-hahl- -guh-yae-yoh
서운할 겁니다
suh-oon-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
서운하세요
suh-oon-hah-sae-yoh
Suggestion / Let's Polite (요)
서운해요
suh-oon-hae-yoh
Question Polite (요)
서운해요?
suh-oon-hae-yoh-?
Connective “and” — (고)
서운하고
suh-oon-hah-goh
Conditional “if” — (면)
서운하면
suh-oon-hah-myuhn
Noun form — (기)
서운함
suh-oon-hahm