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

complacency

noun
 
/kəmˈpleɪsnsi/
 
/kəmˈpleɪsnsi/
[uncountable] (usually disapproving)
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  1. a feeling of being satisfied 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 Originmid 17th cent.: from medieval Latin complacentia, from Latin complacere ‘to please’.
See complacency in the Oxford Advanced American Dictionary
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