FROLICSOME
coltish, frolicsome, frolicky, rollicking, sportive
(adjective) given to merry frolicking; “frolicsome students celebrated their graduation with parties and practical jokes”
Source: WordNet® 3.1
Etymology
Adjective
frolicsome (comparative more frolicsome, superlative most frolicsome)
Characterised or marked by frolicking; playful.
Source: Wiktionary
Frol"ic*some, a.
Definition: Full of gayety and mirth; given to pranks; sportive.
Old England, who takes a frolicsome brain fever once every two or
three years, for the benefit of her doctors. Sir W. Scott.
– Frol"ic*some*ly, adv.
– Frol"ic*some*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition