The amount and complexity of indefinite pronouns can be quite overwhelming. In this subchapter, every pronoun will be discussed in detail. If you would like to start with a quick overview, visit the [summary](#/lesson/Pronouns.Id10) page first.
The indefinite pronoun
An indefinite pronoun refers to someone or something that is not specifically or exactly defined, e.g. _some, every, all,_ or _each_.
Some indefinite pronouns can be used independently: " _Everybody_ is happy." Other indefinite pronouns act as adjectives, which means that they precede a noun: " _Every cat_ is happy."
Collective indefinite pronouns
Among the indefinite pronouns, there is a special category: the collective indefinite pronouns: _all, every, each, everything, everyone,_ and _everybody_. They are defined as a separate class because they have a few features in common.
We will start with the collective indefinite pronouns. After that, we will move on to the rest: _any, several, some, something, somebody, nothing, nobody,_ et cetera.
Pronominal adverbs
Among the indefinite pronouns, there are three pronouns that we can turn into [pronominal adverbs](#/lesson/Pronouns.Ad02) when we combine them with a preposition: we can turn _alles_ into _overal_, _iets_ into _ergens,_ and _niets_ can become _nergens_.
Remember: If, while going through the following pages, you feel like you are losing track of the overall picture, you can always jump to the [summary](#/lesson/Pronouns.Id10).