The story
- Proto-Indo-European*ḱlewH-der.?
- Proto-Slavic*slov-
- Proto-Slavic*Slov-?
- Proto-Slavic*slověninъ
- Ancient GreekΣκλαβηνός (Sklabēnós)
- Medieval GreekΣκλᾰ́βος (Sklắbos)
- Late LatinSclavus
- Medieval Latinsclavus
- Venetans-ciao, sciavo
- Italianciao
- English todayciao
Borrowed from Italian ciao (“hello, goodbye”), from Venetan ciao (“hello, goodbye, your (humble) servant”), from Venetan s-ciao / s-ciavo (“servant, slave”), from Medieval Latin sclavus (“Slav, slave”), related also to Italian schiavo, English Slav, slave and Old Venetan S-ciavón (“Slav”), from Latin Sclavus, ultimately from Proto-Slavic *slověninъ. Not related to Vietnamese chào (“hello, goodbye”). Doublet of Slav and slave.
Words from the same roots
Medieval Latinsclavus all →
Proto-Slavic*slověninъ all →
Etymology from Wiktionary, CC BY-SA 4.0.