Indefinite pronouns in Korean

Korean's indefinite pronouns[cite:@wikipedia:1320819268@cambridgedictionary2025someone] ("someone," "somewhere," "something," …) are formed by appending the suffix -ㄴ가 to the corresponding interrogative ("who," "where," "what," …).

뭐 / 뭔가

what / something

누구 / 누군가

who / someone

어디 / 어딘가

where / somewhere

언제 / 언젠가

when / sometime