someone

/ˈsʌmˌwʌn/
pronoun
  1. An unknown or unspecified person; a person who is not named or known.
    • I heard someone knocking on the door, but no one was there.
    • Can someone please help me carry these groceries?
    • Someone left their umbrella in the classroom.
  2. An important or influential person.
    • After winning the award, she felt like she was finally someone.
    • He always wanted to be someone, not just a face in the crowd.
    • In this company, he's really someone — everyone knows his name.
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