foolhardy

adjectives

marked by defiant disregard for danger or consequences
"foolhardy enough to try to seize the gun from the hijacker"; "became the fiercest and most reckless of partisans"-Macaulay; "a reckless driver"; "a rash attempt to climb Mount Everest"
foolhardy, heady, rash, reckless
is derived from
foolhardiness