[adjective] lacking or showing kindness or compassion or mercy Synonyms:unkind
[adjective] (of persons or their actions) able or disposed to inflict pain or suffering; "a barbarous crime"; "brutal beatings"; "cruel tortures"; "Stalin's roughshod treatment of the kulaks"; "a savage slap"; "vicious kicks" Synonyms:barbarous, brutal, fell, roughshod, savage, vicious
[adjective] (of weapons or instruments) causing suffering and pain; "brutal instruments of torture"; "cruel weapons of war" Synonyms:brutal
[adjective] used of circumstances (especially weather) that cause suffering; "brutal weather"; "northern winters can be cruel"; "a cruel world"; "a harsh climate"; "a rigorous climate"; "unkind winters" Synonyms:brutal, harsh, rigorous, unkind