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

 

deceit

 noun
noun
BrE BrE//dɪˈsiːt//
 
; NAmE NAmE//dɪˈsiːt//
 
[uncountable, countable] Dishonest
 
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dishonest behaviour that is intended to make somebody believe something that is not true; an example of this behaviour synonym deception He was accused of lies and deceit. Everyone was involved in this web of deceit. Their marriage was an illusion and a deceit. See related entries: DishonestWord Familydeceive verbdeceit noundeceitful adjectivedeception noundeceptive adjective Word Origin Middle English: from Old French, past participle (used as a noun) of deceveir ‘deceive’.Extra examples She felt they were trying to draw her into their web of deceit. He did not want to get drawn into this web of deceit. She realized that their whole relationship had been based on lies and deceit.
See the Oxford Advanced American Dictionary entry: deceit