mummery

noun2

1. •
   (figurative) A ridiculous or ostentatious ceremony, formerly especially of a religious nature; extravagant or hypocritical performance.

   • The twentieth of September, they are bound Fast from the midnight watch to pray till morn.— More would he not disclose, or knew not more. —What precious mummery! — 1781
2. •
   (no longer used) Mumming; disguising oneself to perform as a mummer, or to take part in some other festivities or performance.

   • I say the sewer thought I was dressed to bear a part in the tregetour’s mummery, and so I got admission — 1819