Indefinite pronouns can be singular, plural, or both singular and plural.

Indefinite pronouns, like nouns, can be used both as the subject or the object of the verb in a sentence.

Here are examples of singular indefinite pronouns:

someone, everyone, each, anything, either, neither, nobody, everybody, something, somebody, another, anyone, much, less, little, one, no one, nothing, everything

Here are examples of plural indefinite pronouns:

several, both, few, many, fewer, others, they

Here are examples of indefinite pronouns that are both singular and plural:

none, any, some, all, most, more, such