mummery

/M AH1 M ER0 IY0/
noun
  1. 1

    Mumming; disguising oneself to perform as a mummer, or to take part in some other festivities or performance.

  2. 2

    A ridiculous or ostentatious ceremony, formerly especially of a religious nature; extravagant or hypocritical performance.

Source: https://en.wiktionary.org/wiki/mummery