Antonyms of noun unkindness

1 sense of unkindness

Sense 1
unkindness -- (lack of sympathy)
       Antonym of kindness (Sense 1)
      => kindness -- (the quality of being warmhearted and considerate and humane and sympathetic)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun unkindness

1 sense of unkindness

Sense 1
unkindness -- (lack of sympathy)
       => insensitivity, insensitiveness -- (the inability to respond to affective changes in your interpersonal environment)