What does ‘Jiggery-pokery’ mean?

Definition – dishonest or suspicious activity; nonsense

The English language has hundreds of reduplicative formations such as jiggery-pokery. A number of these, such as hocus-pocus and flimflam, and claptrap also have meanings related to “nonsense.” Jiggery-pokery comes from the earlier joukery-pawkery; both joukery and pawkery are English regionalisms for “trickery.”