frolic

Noun

• gay or light-hearted recreational activity for diversion or amusement
  • it was all done in play
    
  • their frolic in the surf threatened to become ugly
    

Verb

• play boisterously
  • The children frolicked in the garden
    
  • the gamboling lambs in the meadows
    
  • The toddlers romped in the playroom
    

Related words

• Synonyms: 
  play , romp , gambol , caper