Indefinite Pronouns
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 that many indefinite pronouns also function as other parts of speech.