wanton

Adjective

• casual and unrestrained in sexual behavior
  • her easy virtue
    
  • he was told to avoid loose (or light) women
    
  • wanton behavior
    

• occurring without motivation or provocation
  • motiveless malignity
    
  • unprovoked and dastardly attack- F.D.Roosevelt
    

Noun

• lewd or lascivious woman

Verb

• behave extremely cruelly and brutally

• engage in amorous play

• become extravagant; indulge (oneself) luxuriously

• spend wastefully
  • wanton one's money away
    

• indulge in a carefree or voluptuous way of life

• waste time; spend one's time idly or inefficiently

Related words

• Synonyms: 
  easy , light , loose , promiscuous , sluttish , motiveless , unprovoked , luxuriate , wanton away , trifle away , piddle , piddle away , trifle