byzantine

noun1

1. •
   (historical) A byzant (coin).

adjective7

1. •
   Of or pertaining to Byzantium.
2. •
   (figurative) Overly complex or intricate, especially of bureaucracy.

   • The byzantine, meandering processes of Icann are engineered in a way that avoids any dissent surfacing, all under the reassuring guise of consensus. — 2014
3. •
   Belonging to the civilization of the Eastern Roman Empire between 331, when its capital was moved to Constantinople, and 1453, when that capital was conquered by the Turks and ultimately renamed Istanbul.
4. •
   Of a style of architecture prevalent in the Eastern Empire down to 1453, marked by the round arch springing from columns or piers, the dome supported upon pendentives, capitals elaborately sculptured, mosaic or other encrustations, etc.
5. •
   (figurative) Devious and stealthy.

   • I never went through a time when more people told me not to trust other people on an issue. Perhaps they were all right. The internal politics were byzantine, much of it played out in the media. — 2020
6. •
   Of or relating to the Byzantine Rite or any of the many Eastern Orthodox churches and Greek Catholic churches that use this rite for their liturgical celebrations.

   • This was the crowning incident of our visit, and I wondered with what Byzantine ritual the Anointed One fresh from the exercise of his priestly functions would be received among his women. — 1920
7. •
   (figurative) Rigid, unceasing, inflexible.

noun2

1. •
   (historical) A native of Byzantium (modern-day Istanbul) or of the Byzantine empire
2. •
   A dark, metallic shade of violet.