An indefinite pronoun is a pronoun that refers to non-specific beings, objects, or places.
Indefinite pronouns can represent either count nouns or noncount nouns and include a number of sub-categories: universal (such as everyone, everything), assertive existential (such as somebody, something), elective existential (such as anyone, anything), and negative (such as nobody, nothing).
They are associated with indefinite determiners (sometimes called indefinite adjectives) of a similar (or identical) form (such as every, any, all, some). A pronoun can be thought of as replacing a noun phrase, while a determiner introduces a noun phrase and precedes any adjectives that modify the noun. Thus all is an indefinite determiner in "all good boys deserve favour" but a pronoun in "all are happy".
Note that many of these words can function as other parts of speech too, depending on context. For example, in many disagree with his views the word "many" functions as an indefinite pronoun, while in many people disagree with his views it functions as a quantifier (a type of determiner) that qualifies the noun "people". Example sentences in which the word functions as an indefinite pronoun are given.
Most indefinite pronouns are either singular or plural. However, some of them can be singular in one context and plural in another. The most common indefinite pronouns are listed below, with examples, as singular, plural or singular/plural.
Notice that a singular pronoun takes a singular verb. Also, any personal pronoun should also agree (in number and gender):
Similarly, plural pronouns need plural agreement:
[Universal distributive:]
English has the following quantifier pronouns:
Some people say that "none" should always take a singular verb, even when talking about countable nouns (e.g. five friends). They argue that "none" means "no one", and "one" is obviously singular. They say that "I invited five friends but none has come" is correct and "I invited five friends but none have come" is incorrect. Actual usage evidence does not support this view. "None" has been used for hundreds of years with both a singular and a plural verb, according to the context and the emphasis required.