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

 

imposture

 noun
noun
BrE BrE//ɪmˈpɒstʃə(r)//
 
; NAmE NAmE//ɪmˈpɑːstʃər//
 
[uncountable, countable](formal)
 
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an act of tricking people deliberately by pretending to be somebody else Word Origin mid 16th cent.: via French from late Latin impostura, from Latin imposit- ‘imposed upon’, from the verb imponere ‘inflict, deceive’ (from in- ‘in, upon’ + ponere ‘put’).
See the Oxford Advanced American Dictionary entry: imposture