The word "rejoice" means to feel or show great joy or delight. It is an expression of happiness, often in response to something positive or uplifting that has happened. When you rejoice, you may celebrate, express your happiness vocally, or display your joy in other ways.
The word "rejoice" comes from the Old French "rejoïr," which means to "make joyful." This, in turn, has its origins in the Latin word "regociare," where "re-" means "again" and "gaudere" means "to rejoice."