Verbseoul.
하다 verb (adj)
짠하다jjanhadato be bitterly regretful

To say to be bitterly regretful politely in the present tense, use 짠해요 (jjahn-hae-yoh). Below is the full conjugation of 짠하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
짠해
jjahn-hae
짠해요
jjahn-hae-yoh
짠합니다
jjahn-hahm-nee-dah
Past
짠했어
jjahn-hae-ssuh
짠했어요
jjahn-hae-ssuh-yoh
짠했습니다
jjahn-hae-sseum-nee-dah
Future
짠할 거야
jjahn-hahl- -guh-yah
짠할 거예요
jjahn-hahl- -guh-yae-yoh
짠할 겁니다
jjahn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
짠하세요
jjahn-hah-sae-yoh
Suggestion / Let's Polite (요)
짠해요
jjahn-hae-yoh
Question Polite (요)
짠해요?
jjahn-hae-yoh-?
Connective “and” — (고)
짠하고
jjahn-hah-goh
Conditional “if” — (면)
짠하면
jjahn-hah-myuhn
Noun form — (기)
짠함
jjahn-hahm