adj.
   - (of a cruel or violent action) deliberate and unprovoked.
- sexually immodest or promiscuous.
- literary growing profusely; luxuriant. ▸lively; playful. 
n.
 archaic a sexually immodest or promiscuous woman.
v.
 archaic or 
literary  - play; frolic.
- behave in a sexually immodest or promiscuous way.
Derivative
  
    - wantonly adv.
- wantonness n.
 
  Etymology
  ME wantowen ‘rebellious, lacking discipline’, from wan- ‘badly’ + OE togen ‘trained’ (rel. to team and tow1).