Difference between Unkindly and Unkind

UNKINDLY vs UNKIND: ADJECTIVE

Lacking kindness
Deficient in humane and kindly feelings
Lacking or showing kindness or compassion or mercy
Used of circumstances (especially weather) that cause suffering
Lacking kindness; inconsiderate or unsympathetic.
Harsh; severe.
Having no race or kindred; childless.
Not kind; contrary to nature, or the law of kind or kindred; unnatural.
Wanting in kindness, sympathy, benevolence, gratitude, or the like; cruel; harsh; unjust; ungrateful.

Not sympathetic; lacking in or not springing from or exhibiting kindness, benevolence, or affection; not kind; harsh; cruel.
Not natural; unnatural.

Nastily, Insensitively, Meanly, Harshly, Unsympathetically, Rudely, Dismissively, Disrespectfully, Condescendingly, Disparagingly, Scornfully, Disdainfully, Contemptuously, Unsympathetic, Unkind

Rude, Edged, Cutting, Rigorous, Hard, Pitiless, Inhumane, Stinging, Brutal, Heartless, Unsympathetic, Harsh, Cruel, Unkindly, Hurtful

Uncharitably, Vulgarly, Derisively, Superciliously, Arrogantly, Contemptibly, Hurtfully, Churlishly, Tactlessly, Impolitely, Sneeringly, Unsympathetically, Condescendingly, Unsympathetic, Unkind

Rude, Edged, Cutting, Rigorous, Hard, Pitiless, Inhumane, Stinging, Brutal, Heartless, Unsympathetic, Harsh, Cruel, Unkindly, Hurtful

If he isn't able to stop this injustice, history will judge him unkindly she said.
My new mistress was a passionate woman; but yet she did not treat me very unkindly.
Me If two lines and rollerblading the rates of she find it very isordil unkindly.
Equally, I will not deny another Blundellian help if they are being treated unkindly.
When they have fought the rabble and freed Flourdelis, she rejects Burbon unkindly.
One should never behave dogmatically or unkindly in leading others.
Good luck to all those who QVC so unkindly dismissed.
The Negroes did not treat them unkindly, green bundle.
"I've seen better," James says, again, not unkindly.
And he was terribly tired, smiling not unkindly.