bárbaros
bárbar--os agr. βάρβαρος eigtl. 'blah-blah-er, Blahblahrer'; ‘fremd, nichtgriechisch, unkultiviert, roh’
Onomatopoeic: from the perceived βαρ-βαρ (bar-bar) sounds incomprehensible to Ancient Greeks and spoken by foreigners.[1] As an onomatopoeic construction, βαρ-βαρ is similar to modern English blah blah, but meaning gibberish, gabble; compare also babble from Proto-Indo-European *bʰa-bʰa-. Cognate to Mycenaean Greek 𐀞𐀞𐀫 (pa-pa-ro) and Sanskrit बर्बर (barbara, “barbarian, non-Aryan, stammering, blockhead”).
Possibly related to Proto-Indo-European *balb-, *balbal- (“tongue-tied”). Compare with Latin balbus (“stammering, stuttering”), Russian болтать (boltatʹ, “to chatter, babble”) and балабол(“over-talkative”, chatterbox), Lithuanianbalbė́ti (“to talk, babble”), Sanskrit बल्बला (balbalā, “stammering”), Albanian belbët (“stammering”).
For the semantic development, compare Arabic عَجَم (ʕajam, “non-Arab; Persian”), from the root ع ج م (ʕ-j-m), referring to people who speak unclearly, or Proto-Slavic *němьcь (“non-Slav, German”), from *němъ (“mute”).
βᾰ́ρβᾰρος • (bárbaros) m or f (neuter βᾰ́ρβᾰρον); second declension(Attic, Ionic, Koine)