›showing a lack of care about risks or danger, and acting without thinking about the results of your actions: These punks have a reckless disregard for the law.He pleaded innocent to reckless driving charges.recklessly
/ˈrek·ləs·li/adv›She spends her money recklessly.recklessness
/ˈrek·ləs·nəs/n[U]›The accident was a result of recklessness.