* Formal: The birdsong filled the morning air with a jocund melody.
* Informal: She greeted us with a jocund smile and a warm welcome.
* Literary: The jocund spirit of the festival was evident in the laughter and dancing.
* Descriptive: The jocund colors of the autumn leaves painted a vibrant landscape.
Remember: "Jocund" implies a cheerful, lively, and lighthearted quality. It can be used to describe a person, a mood, or a setting.