English

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

 

complacency

 noun
noun
BrE BrE//kəmˈpleɪsnsi//
 
; NAmE NAmE//kəmˈpleɪsnsi//
 
[uncountable] (usually disapproving)
 
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a feeling of satisfaction with yourself or with a situation, so that you do not think any change is necessary; the state of being complacent Despite signs of an improvement in the economy, there is no room for complacency. His early success as a writer led to complacency and arrogance. Word Origin mid 17th cent.: from medieval Latin complacentia, from Latin complacere ‘to please’.
See the Oxford Advanced American Dictionary entry: complacency