Grum

Example:Even though it was a rainy day, the cheerful atmosphere of the cafe made everyone forget the weather.

Definition:Happy or full of good spirits; optimistic.

Example:He was contented with his peaceful life and didn't complain about anything.

Definition:Happy and satisfied with one's situation or circumstances.

Example:The bubbly personality of the hostess made everyone laugh and feel at ease.

Definition:Cheerfully lively and ebullient.