Verbseoul.
하다 verb (adj)
가능하다ganeunghadato be possible

To say to be possible politely in the present tense, use 가능해요 (gah-neung-hae-yoh). Below is the full conjugation of 가능하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
가능해
gah-neung-hae
가능해요
gah-neung-hae-yoh
가능합니다
gah-neung-hahm-nee-dah
Past
가능했어
gah-neung-hae-ssuh
가능했어요
gah-neung-hae-ssuh-yoh
가능했습니다
gah-neung-hae-sseum-nee-dah
Future
가능할 거야
gah-neung-hahl- -guh-yah
가능할 거예요
gah-neung-hahl- -guh-yae-yoh
가능할 겁니다
gah-neung-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
가능하세요
gah-neung-hah-sae-yoh
Suggestion / Let's Polite (요)
가능해요
gah-neung-hae-yoh
Question Polite (요)
가능해요?
gah-neung-hae-yoh-?
Connective “and” — (고)
가능하고
gah-neung-hah-goh
Conditional “if” — (면)
가능하면
gah-neung-hah-myuhn
Noun form — (기)
가능함
gah-neung-hahm