brutal cruel

from The Collaborative International Dictionary of English v.0.48
inhumane \in`hu*mane"\ ([i^]n`h[=u]*m[=a]n"), adj.
   not humane; lacking and reflecting lack of pity, kindness, or
   compassion; as, humans are innately inhumane; this explains
   much of the misery and suffering in the world; biological
   weapons are considered too inhumane to be used. [Narrower
    

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