unkind

lacking kindness

• “a thoughtless and unkind remark”
• “the unkindest cut of all”

deficient in humane and kindly feelings

lacking or showing kindness or compassion or mercy

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”