嬉嬉[kiki] gleeful
嬉しい[ureshii] happy
嬉しがる[ureshigaru] to be glad
嬉し涙[ureshinamida] happy tears
嬉笑[kishou] happy laughter

嬉しそう[ureshisou] delightful
嬉戯[kigi] frisking
嬉泣[ureshinaki] weeping for joy
嬉しがらせ[ureshigarase] flattery
嬉遊曲[kiyuukyoku] divertimento