Joyous (adjective)

1. Feeling or expressing great pleasure and happiness.
2. Full of or characterized by joy; glad.

Origin:

Middle english joious, from old french joios, from latin gaudiosus, from gaudium joy.

Examples:

1. It was a joyous occasion.
2. The crowd was joyous at the news of the victory.
3. She had a joyous laugh.
4. The children were joyous on Christmas morning.
5. The music was joyous and upbeat.