/ ˈsʌmwʌn; NAmE / (also some·body ) pronoun
1.
a person who is not known or mentioned by name :
There's someone at the door.
Someone's left their bag behind.
It's time for someone new (= a new person) to take over.
It couldn't have been me—it must have been someone else (= a different person) .
Should we call a doctor or someone ?
HELP NOTE : The difference between someone and anyone is the same as the difference between some and any . Look at the notes there.
2.
an important person :
He was a small-time lawyer keen to be someone .
—compare nobody