reckless reckless /ˈrɛkləs/

adjective

1. () Marked by defiant disregard for danger or consequences  ( heady , rash , foolhardy , reckless )
   marked by defiant disregard for danger or consequences
    Foolhardy enough to try to seize the gun from the hijacker
   foolhardy enough to try to seize the gun from the hijacker
    Became the fiercest and most reckless of partisans
   became the fiercest and most reckless of partisans
    A reckless driver
   a reckless driver
    A rash attempt to climb Mount Everest
   a rash attempt to climb Mount Everest
   
2. Characterized by careless unconcern  ( heedless , reckless )
   characterized by careless unconcern
    The heedless generosity and the spasmodic extravagance of persons used to large fortunes
   the heedless generosity and the spasmodic extravagance of persons used to large fortunes
    Reckless squandering of public funds
   reckless squandering of public funds