BARBAROUS
barbarous
(adjective) primitive in customs and culture
barbarous, brutal, cruel, fell, roughshod, savage, vicious
(adjective) (of persons or their actions) able or disposed to inflict pain or suffering; “a barbarous crime”; “brutal beatings”; “cruel tortures”; “Stalin’s roughshod treatment of the kulaks”; “a savage slap”; “vicious kicks”
Source: WordNet® 3.1
Etymology
Adjective
barbarous (comparative more barbarous, superlative most barbarous)
(said of language) Not classical or pure.
uncivilized, uncultured
Like a barbarian, especially in sound; noisy, dissonant.
Source: Wiktionary
Bar"ba*rous, a. Etym: [L. barbarus, Gr. , strange, foreign; later,
slavish, rude, ignorant; akin to L. balbus stammering, Skr. barbara
stammering, outlandish. Cf. Brave, a.]
1. Being in the state of a barbarian; uncivilized; rude; peopled with
barbarians; as, a barbarous people; a barbarous country.
2. Foreign; adapted to a barbaric taste.[Obs.]
Barbarous gold. Dryden.
3. Cruel; ferocious; inhuman; merciless.
By their barbarous usage he died within a few days, to the grief of
all that knew him. Clarendon.
4. Contrary to the pure idioms of a language.
A barbarous expression G. Campbell.
Syn.
– Uncivilized; unlettered; uncultivated; untutored; ignorant;
merciless; brutal. See Ferocious.
Source: Webster’s Unabridged Dictionary 1913 Edition