Verbseoul.
하다 verb
배반하다baebanhadato betray

To say to betray politely in the present tense, use 배반해요 (bae-bahn-hae-yoh). Below is the full conjugation of 배반하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
배반해
bae-bahn-hae
배반해요
bae-bahn-hae-yoh
배반합니다
bae-bahn-hahm-nee-dah
Past
배반했어
bae-bahn-hae-ssuh
배반했어요
bae-bahn-hae-ssuh-yoh
배반했습니다
bae-bahn-hae-sseum-nee-dah
Future
배반할 거야
bae-bahn-hahl- -guh-yah
배반할 거예요
bae-bahn-hahl- -guh-yae-yoh
배반할 겁니다
bae-bahn-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
배반하세요
bae-bahn-hah-sae-yoh
Suggestion / Let's Polite (요)
배반해요
bae-bahn-hae-yoh
Question Polite (요)
배반해요?
bae-bahn-hae-yoh-?
Connective “and” — (고)
배반하고
bae-bahn-hah-goh
Conditional “if” — (면)
배반하면
bae-bahn-hah-myuhn
Noun form — (기)
배반함
bae-bahn-hahm