A reflexive verb is a verb in which the subject and object are the same, meaning the action is performed on oneself.
In German, reflexive verbs are used with reflexive pronouns such as mich (myself), dich (yourself), sich (himself/herself/itself), uns (ourselves), and euch (yourselves).
Example
Ich wasche mich.
I wash myself.
Er zieht sich an.
He gets dressed.
Sie freut sich auf den Urlaub.
She is looking forward to the holiday.