over-joyous

adjective

1. joyful; happy; jubilant: the joyous sounds of children at play.

adjective

1. having a happy nature or mood
2. joyful

adj.c.1300, from Anglo-French joyous, Old French joios “happy, cheerful, merry, glad” (12c., Modern French joyeux), from joie (see joy). Related: Joyously; joyousness.