An indefinite pronoun does not refer to any specific person, thing or amount. It is vague and "not definite". Some typical indefinite pronouns are:
- all, another, any, anybody/anyone, anything, each, everybody/everyone, everything, few, many, nobody, none, one, several, some, somebody/someone
Note: Many indefinite pronouns also function as other parts of speech. Look at "another" in the following sentences:
He has one job in the day and another at night. (pronoun)
I'd like another cup, please. (adjective)
Most indefinite pronouns are either singular or plural. However, some of them can be singular in one context and plural in another.