1. in a harsh, cruel, or unsympathetic manner

1. harsh, cruel, or lacking in sympathy
Usage: less common than adverb form

Examples

• She spoke unkindly to her younger brother.
• The critic reviewed the play unkindly, calling it boring and poorly acted.
• He was treated unkindly by his classmates.
• The weather turned unkindly cold just as we started our hike.
• Don’t judge her so unkindly; she’s doing her best.
• His unkindly remarks hurt her feelings deeply.