frolic

nouns

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"
caper, frolic, gambol, play, romp

verbs

play boisterously
"The children frolicked in the garden"; "the gamboling lambs in the meadows"; "The toddlers romped in the playroom"
cavort, disport, frisk, frolic, gambol, lark, lark about, rollick, romp, run around, skylark, sport