The meaning of jiggery-pokery is to behave dishonestly or deceitfully.
Jiggery-pokery is a noun.
1. Although everyone praised Zadok for his fantastic marks in the board exam, Sam kept quiet because he knew that the high marks were by means of jiggery-pokery and not by fair methods.
2. The jiggery-pokery happening in election leaves one in a state of confusion and uncertainty.