Pronouns are some of the most useful words in the English language. They are used in the place of a noun to avoid it having to be named twice. Definition of Pronoun In English, the part of speech used as a substitute for an antecedent noun that is clearly understood, and with which it agrees in person, number, and gender. Pronouns are classified as personal (I, we, you, he, she, it, they) Demonstrative (this, these, that, those), relative (who, which, that, as), indefinite (each, all, everyone, either, one, both, any, such, somebody), interrogative (who, which, what), reflexive (myself, herself) Possessive...