uncivilized (adj.)
- animal
 - anthropophagous
 - atrocious
 - barbarian
 - barbaric
 - barbarous
 - beastly
 - bestial
 - bloodthirsty
 - bloody
 - bloody-minded
 - boorish
 - brutal
 - brute
 - brutish
 - cannibalistic
 - churlish
 - cloddish
 - coarse
 - crude
 - cruel
 - demoniac
 - demoniacal
 - devilish
 - diabolic
 - fell
 - feral
 - ferine
 - ferocious
 - fiendish
 - fierce
 - gauche
 - gross
 - hellish
 - ill-bred
 - ill-mannered
 - impolite
 - inelegant
 - infernal
 - inhuman
 - inhumane
 - loutish
 - lowbred
 - malign
 - malignant
 - merciless
 - murderous
 - noncivilized
 - outlandish
 - philistine
 - pitiless
 - primitive
 - provincial
 - rough
 - rough-and-ready
 - rude
 - rugged
 - ruthless
 - sadistic
 - sanguinary
 - sanguineous
 - satanic
 - savage
 - subhuman
 - truculent
 - unchristian
 - uncivil
 - uncombed
 - unconscionable
 - uncouth
 - uncultivated
 - uncultured
 - uneducated
 - ungentle
 - ungodly
 - unholy
 - unhuman
 - unkempt
 - unlearned
 - unmannerly
 - unpolished
 - unrefined
 - unsophisticated
 - untamed
 - untutored
 - vicious
 - wicked
 - wild
 - wolfish