carelessly

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

heedlessly incautiously raffishly rakishly

cautiously carefully