carelessly in WordNet English dictionary

1. without caution or prudence
   "one unfortunately sees historic features carelessly lost when estates fall into unsympathetic hands"
   incautiously  carelessly  incautiously  carelessly 
   
2. in a rakish manner
   "she wore her hat rakishly at an angle"
   rakishly  raffishly  carelessly  rakishly  raffishly  carelessly 
   
3. without care or concern
   "carelessly raised the children's hopes without thinking of their possible disappointment"
   carelessly  heedlessly  carelessly  heedlessly