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

 

overkill

 noun
noun
BrE BrE//ˈəʊvəkɪl//
 
; NAmE NAmE//ˈoʊvərkɪl//
 
[uncountable](disapproving)
 
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too much of something that reduces the effect it has There is a danger of overkill if you plan everything too carefully.
See the Oxford Advanced American Dictionary entry: overkill