1. foolhardy, heady, rash, reckless

marked by defiant disregard for danger or consequences

Example Sentences:
'foolhardy enough to try to seize the gun from the hijacker'
'became the fiercest and most reckless of partisans'
'a reckless driver'
'a rash attempt to climb Mount Everest'

Synonyms

• foolhardy
• heady
• rash

2. heedless, reckless

characterized by careless unconcern

Example Sentences:
'the heedless generosity and the spasmodic extravagance of persons used to large fortunes'
'reckless squandering of public funds'

Synonyms

• heedless