barbarousadj.

barbarousbarbarous: [15] Originally, a barbarous person was a ‘foreigner’, anyone who did not speak your own language. Greek bárbaros meant ‘foreign, ignorant’, and it has been speculated that its ultimate signification was ‘unable to speak intelligibly’ (the related Sanskrit barbaras meant ‘stammering’). English acquired the word from Latin barbarus, a modified Vulgar Latin version of which, *brabus, produced Italian bravo and hence, via French, English brave.=> bravebarbarous (adj.)c. 1400, "uncivilized, uncultured, ignorant," from Latin barbarus, from Greek barbaros (see barbarian). Meaning "not Greek or Latin" (of words or language) is from c. 1500; that of "savagely cruel" is from 1580s.