An reflexive pronoun "reflects" a noun or pronoun by taking the place of its antecedent when the noun or pronoun is doing something to itself.
In English reflexive pronouns are formed just like intensive pronouns--by adding -self or -selves to the root pronoun.
Examples: We underrated ourselves before the race.
The cat washed herself carefully with her tongue.
The only reflexive pronouns in modern English are the following:
myself, yourself, himself, herself, itself, ourselves, yourselves, and themselves.The words hisself and theirselves do not exist.