1) Barbaric 2) Barbarous 3) Beastly 4) Bestial 5) Brutal 6) Brutally cruel 7) Brute 8) Brutish 9) Cannibalic 10) Cold 11) Cold-blooded 12) Cruel 13) Cruel, brutal 14) Fell 15) French word used in English 16) Hannibal Lecter-like 17) Inhuman 18) Insensate 19) Kind of treatment 20) Not humane 21) Not nice to animals 1) Barbarous 2) Bestial 3) Brutal 4) Brute 5) Brutish 6) Cannibalic 7) Cruel 8) Fell 9) Inhuman 10) Painful 11) Savage 12) Vicious 
Latin, meaning: inhumanly. 
[adj] - lacking and reflecting lack of pity or compassion
inhumane Lacking pity or compassion; cruel.
adjective lacking and reflecting lack of pity or compassion; `humans are innately inhumane; this explains much of the misery and suffering in the world`; `biological weapons are considered too inhumane to be used`
not humane; lacking humanity, kindness, compassion, etc.