UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈsʌmwʌn/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈsʌmˌwʌn, -wən/ ,USA pronunciation: respelling(sumwun′, -wən)

WordReference Collins English Usage © 2020
someone - somebody
used in statements
You use someone or somebody to refer to a person without saying who you mean.
Carlos sent someone to see me.
There was an accident and somebody got hurt.
There is no difference in meaning between someone and somebody, but somebody is more common in spoken English, and someone is more common in written English.
Be careful
You don't usually use ‘someone’ or ‘somebody’ as part of the object of a negative sentence. Don't say, for example, ‘I don’t know someone who lives in York'. You say ‘I don’t know anyone who lives in York'.
There wasn't anyone there.
There wasn't much room for anybody else.
used in questions
In questions, you can use someone, somebody, anyone, or anybody as part of the object. You use someone or somebody when you are expecting the answer ‘yes’. For example, if you think I met someone, you might ask me ‘Did you meet someone?’ If you do not know whether I met someone or not, you would ask ‘Did you meet anyone?’
Marit, did you have someone in your room last night?
Was there anyone you knew at the party?
Be careful
Don't use ‘someone’ or ‘somebody’ with of in front of the plural form of a noun. Don't say, for example, ‘Someone of my friends is an artist’. You say ‘One of my friends is an artist’.
One of his classmates won a national poetry competition.
‘Where have you been?’ one of them asked.
‘some people’
Someone and somebody do not have plural forms. If you want to refer to a group of people without saying who you mean, you say some people.
Some people tried to escape through a window.
This behaviour may be annoying to some people.
'someone' also found in these entries:

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