wanton in WordNet English dictionary

1. casual and unrestrained in sexual behavior
   "her easy virtue"; "he was told to avoid loose (or light) women"; "wanton behavior"
   easy  light  loose  promiscuous  sluttish  wanton 
   
2. occurring without motivation or provocation
   "motiveless malignity"; "unprovoked and dastardly attack"- F.D.Roosevelt
   motiveless  unprovoked  wanton 
   

1. become extravagant; indulge (oneself) luxuriously
   luxuriate  wanton 
   
2. waste time; spend one's time idly or inefficiently
   piddle  wanton  wanton away  piddle away  trifle 
   
3. spend wastefully
   "wanton one's money away"
   wanton  wanton away  trifle away 
   
4. behave extremely cruelly and brutally
   wanton 
   
5. engage in amorous play
   wanton 
   
6. indulge in a carefree or voluptuous way of life
   wanton 
   

1. lewd or lascivious woman
   wanton