unkindness's Usage Examples:

The ancient cannon, which look seaward, wear a very menacing expression; but I doubt if there is any unkindness in their rusty old hearts.

After his death Leonardo experienced unkindness from his seven half-brothers, Ser Piero's legitimate sons.

To his own age Voltaire was pre-eminently a poet and a philosopher; the unkindness of succeeding ages has sometimes questioned whether he had any title to either name, and especially to the latter.

Synonyms:

insensitiveness, unhelpfulness, thoughtlessness, inconsiderateness, inconsideration, insensitivity,

Antonyms:

sensitiveness, kindness, consideration, sensitivity, thoughtfulness,