legerdemain
From Longman Dictionary of Contemporary Englishlegerdemainle‧ger‧de‧main /ˌledʒədəˈmeɪn $ -dʒər-/ noun [uncountable] formal GOOD ATwhen you deceive people cleverly economic legerdemainExamples from the Corpuslegerdemain• This kind of legal legerdemain is one of the most damaging legacies of the takeover binge of the 1980s.Origin legerdemain (1400-1500) French léger de main “light of hand”