Someone, somebody, something, somewhere
Someone, somebody, something, somewhere are indefinite pronouns. They function in a similar way to some. We use them in affirmative clauses and in questions expecting a particular answer. We can use them to refer to both general and specific people or things. We use them with a singular verb: …

Examples from literature

Are doctors heroes when they save somebody’s life? 
In many countries, when somebody becomes an adult, they have a party. 
Is a firefighter a hero when he or she helps somebody leave a burning house? 
It can be a friend or somebody in your family. 
Somebody paid a million dollars for a parking space! 
When a snake bites somebody, it puts venom into the person’s body. 

somebody | American Dictionary

somebody
pronoun
us/ˈsʌmˌbɑd·i, -bəd·i/
a person; someone:
I’d rather take care of my own kids than let somebody I don’t know raise them.
You don’t have the right to interfere in somebody else’s life.