inhumane

lacking and reflecting lack of pity or compassion; this explains much of the misery and suffering in the world"; "humans are innately inhumane; "biological weapons are considered too inhumane to be used"

• barbarous, brutal, cruel, fell, roughshod, savage, vicious — (of persons or their actions) able or disposed to inflict pain or suffering
• beastly, bestial, brute(a), brutish — resembling a beast; showing lack of human sensibility
• brutal, cruel — (of weapons or instruments) causing suffering and pain
• cannibalic — marked by barbarity suggestive of a cannibal; rapaciously savage
• cold, cold-blooded, inhuman, insensate — without compunction or human feeling
• pitiless, unkind — deficient in humane and kindly feelings

• humaneness — the quality of compassion or consideration for others (people or animals)