[1] : The Collaborative International Dictionary of English v.0.48

wantonly \wan"tonly\, adv.
   1. in a wanton manner; without regularity or restraint;
      loosely; sportively; gayly; playfully; recklessly;
      lasciviously.
      1913 webster

   2. unintentionally; accidentally. obs. --j. dee.
      1913 webster

[2] : WordNet (r) 2.0

wantonly
     adv 1: in a wanton manner; "the animals were killed wantonly for
            sport"
     2: in a licentious and promiscuous manner; "this young girl has
        to share a room with her mother who lives promiscuously"
        syn: licentiously, promiscuously
see also:
licentiously promiscuously 

Wantonly >> W Words
Wantonly, definition of term: Wantonly
wantonly_pag1.html