What is an indefinite pronoun?

2 answers

http://www.k12reader.com/indefinite-pronouns/
Indefinite pronouns are pronouns that refer to unspecified things. Things that are unspecified are places, objects, or people.
Some of this type of pronoun are: no one, nobody, everyone, somebody, anyone, one, everything, something, nothing, each, another, other, whatever, whichever, either, both, neither, none, and all.

Some may be two words like each other.

Some may be possessive: one's, and theirs.

Hope this will help you!