Anyone (pronoun)

1. Any person, no matter who.
2. Regardless of who.
3. Any person at all.
4. A person of either sex.
5. An indefinite person.

Origin:

Derived from the old english words 'any' and 'one', meaning 'any one person'.

Examples:

1. Does anyone know the answer?
2. Anyone can join the club.
3. I'll speak to anyone who wants to listen.
4. Can anyone help me?
5. Anyone who breaks the rules will be punished.