Verbseoul.
하다 verb (adj)
무관심하다mugwansimhadaindifferent, uninterested, apathetic

To say indifferent, uninterested, apathetic politely in the present tense, use 무관심해요 (moo-gwahn-sheem-hae-yoh). Below is the full conjugation of 무관심하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
무관심해
moo-gwahn-sheem-hae
무관심해요
moo-gwahn-sheem-hae-yoh
무관심합니다
moo-gwahn-sheem-hahm-nee-dah
Past
무관심했어
moo-gwahn-sheem-hae-ssuh
무관심했어요
moo-gwahn-sheem-hae-ssuh-yoh
무관심했습니다
moo-gwahn-sheem-hae-sseum-nee-dah
Future
무관심할 거야
moo-gwahn-sheem-hahl- -guh-yah
무관심할 거예요
moo-gwahn-sheem-hahl- -guh-yae-yoh
무관심할 겁니다
moo-gwahn-sheem-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
무관심하세요
moo-gwahn-sheem-hah-sae-yoh
Suggestion / Let's Polite (요)
무관심해요
moo-gwahn-sheem-hae-yoh
Question Polite (요)
무관심해요?
moo-gwahn-sheem-hae-yoh-?
Connective “and” — (고)
무관심하고
moo-gwahn-sheem-hah-goh
Conditional “if” — (면)
무관심하면
moo-gwahn-sheem-hah-myuhn
Noun form — (기)
무관심함
moo-gwahn-sheem-hahm