Definition of heedless adjective from the Oxford Advanced Learner's Dictionary

 

heedless

 adjective
adjective
BrE BrE//ˈhiːdləs//
 
; NAmE NAmE//ˈhiːdləs//
 
 
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[not usually before noun] heedless (of somebody/something) (formal) not paying careful attention to somebody/something heedless bravery
See the Oxford Advanced American Dictionary entry: heedless