barbarous

adjectives

(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"

barbarous, brutal, cruel, fell, roughshod, savage, vicious

is derived from

primitive in customs and culture

barbarous

is similar to

not having a high state of culture and social development