used for referring to a person when you do not know or do not say who the person isI can’t find my calculator – someone must have taken it.
They need someone like you, someone who understands business methods.
someone else: His wife told him she was in love with someone else.
someone nice/famous/special: I’ve invited someone special that I want you to meet.
or someone (=or someone similar): They’ll probably get Arnold Schwarzenegger or someone to play Hercules.