The story
- Proto-Indo-European*bʰuǵ-
- Thracian*būzas
- Ancient GreekΒῡ́ζᾱς (Bū́zās)
- Ancient GreekΒῡζᾰ́ντῐον (Būzắntĭon)
- LatinBȳzantium
- Late Latinbȳzantīnus
- English todayByzantine
Borrowed from Late Latin bȳzantīnus, from Bȳzantium, from Ancient Greek Βυζάντιον (Buzántion). The figurative senses evoke the reputation for palace intrigue of the Byzantine imperial court.
Etymology from Wiktionary, CC BY-SA 4.0.