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English definition of “overkill”

overkill

noun [U]     /ˈəʊ.və.kɪl/ US  /ˈoʊ.vɚ-/ disapproving
much more of something than is needed, resulting in less effectiveness: Should I add an explanation, or would that be overkill?Too much and unnecessary
(Definition of overkill noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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