Adjective
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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"
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extremely exciting as if by alcohol or a narcotic
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marked by the exercise of good judgment or common sense in practical matters
"judicious use of one's money"
"a wise decision"