/ djuːˈplɪsəti; NAmE duː-/ noun
[ U ] ( formal ) dishonest behaviour that is intended to make sb believe sth which is not true
SYN deceit
► du·pli·ci·tous / djuːˈplɪsɪtəs; NAmE duː-/ adjective
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WORD ORIGIN
late Middle English : from Old French duplicite or late Latin duplicitas , from Latin duplic- twofold, from duo two + plicare to fold.