Verbseoul.
하다 verb
반대하다bandaehadato oppose

To say to oppose politely in the present tense, use 반대해요 (bahn-dae-hae-yoh). Below is the full conjugation of 반대하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
반대해
bahn-dae-hae
반대해요
bahn-dae-hae-yoh
반대합니다
bahn-dae-hahm-nee-dah
Past
반대했어
bahn-dae-hae-ssuh
반대했어요
bahn-dae-hae-ssuh-yoh
반대했습니다
bahn-dae-hae-sseum-nee-dah
Future
반대할 거야
bahn-dae-hahl- -guh-yah
반대할 거예요
bahn-dae-hahl- -guh-yae-yoh
반대할 겁니다
bahn-dae-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
반대하세요
bahn-dae-hah-sae-yoh
Suggestion / Let's Polite (요)
반대해요
bahn-dae-hae-yoh
Question Polite (요)
반대해요?
bahn-dae-hae-yoh-?
Connective “and” — (고)
반대하고
bahn-dae-hah-goh
Conditional “if” — (면)
반대하면
bahn-dae-hah-myuhn
Noun form — (기)
반대함
bahn-dae-hahm