Knav'er·y noun ; plural Knaveries 1. The practices of a knave; petty villainy; fraud; trickery; a knavish action. « This is flat knavery , to take upon you another man's name.» Shak. 2. plural Roguish or mischievous tricks. Shak. Found on http://www.encyclo.co.uk/webster/K/13
action or practice characteristic of a knave. · unprincipled, untrustworthy, or dishonest dealing; trickery. · a knavish act or practice. Found on https://www.infoplease.com/dictionary/knavery