Definition of recklessness noun from the Oxford Advanced Learner's Dictionary

 

recklessness

 noun
noun
BrE BrE//ˈrekləsnəs//
 
; NAmE NAmE//ˈrekləsnəs//
 
[uncountable]
 
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behaviour that shows a lack of care about danger and the possible results of your actions He was full of boyish recklessness and irresponsibility.