Frolicsome
/ˈfrɑːlɪksəm/
Definition 1 of 1
Pro Tip 1/3Positive Connotation
Used to express joyfulness and high spirits, often in a playful manner. 
Her frolicsome manner made everyone smile.
Pro Tip 2/3Informal Context
Best used in casual or informal situations, not usually in formal writing. 
At the beach, the frolicsome atmosphere was contagious.
Pro Tip 3/3Energetic Youth
Often describes the playful behaviors of children or young animals. 
The park was filled with frolicsome kids.