adjective
joyous
JOY-uhs/ˈdʒɔɪəs/
Feeling or bringing great happiness.
Dancing hand in hand, the pair share a joyous moment.

Etymology
The base covered both the feeling of delight and something that gives delight. That range connects joyous with both being happy and bringing happiness to others.
In context
they're joyous. They're filled full of joy because they have that peace.
More examples
- The news of her recovery makes this a joyous day.
- A joyous cheer rises from the crowd as the team wins.
- Our reunion is even more joyous than I imagined.
Forms
joyous · more joyous · most joyous
joy noun — a feeling of great happiness
joyously adverb — in a way that expresses great happiness