Definition of foolhardy adjective from the Oxford Advanced American Dictionary

     

    foolhardy

     adjective
    adjective
    NAmE//ˈfulˌhɑrdi//
     
    (disapproving)
     
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  1. 1taking unnecessary risks synonym reckless
  2. 2 It would be foolhardy to sail in weather like this.
foolhardiness
 
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noun [uncountable] There's no excuse for such foolhardiness—you could have been killed. He showed his usual disregard for danger—an attitude his friends called bravery and his enemies foolhardiness.
See the Oxford Advanced Learner's Dictionary entry: foolhardy