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

 

madcap

 adjective
adjective
BrE BrE//ˈmædkæp//
 
; NAmE NAmE//ˈmædkæp//
 
[usually before noun](informal) Describing strange traits
 
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(of people, plans, etc.) crazy and not caring about danger; not sensible synonym reckless madcap schemes/escapades Stories began circulating about her madcap lifestyle. See related entries: Describing strange traits
See the Oxford Advanced American Dictionary entry: madcap