unchristian (adj.)

• animal
• anthropophagous
• atheist
• atheistic
• atrocious
• barbaric
• barbarous
• beastly
• bestial
• bloodthirsty
• bloody
• bloody-minded
• brutal
• brute
• brutish
• cannibalistic
• cruel
• demoniac
• demoniacal
• devilish
• diabolic
• disbelieving
• faithless
• fell
• feral
• ferocious
• fiendish
• fierce
• gentile
• godless
• heathen
• hellish
• impious
• infernal
• inhuman
• inhumane
• irreligious
• murderous
• pagan
• ruthless
• sadistic
• sanguinary
• sanguineous
• satanic
• savage
• sinful
• subhuman
• truculent
• unbelieving
• uncivilized
• unconscionable
• ungodly
• unholy
• unhuman
• unrighteous
• vicious
• wicked
• wolfish