'Unkind' in the Bible

Without knowledge, not true to their undertakings, unkind, having no mercy:

So I take pleasure in being feeble, in unkind words, in needs, in cruel attacks, in troubles, on account of Christ: for when I am feeble, then am I strong.

Let all bitter, sharp and angry feeling, and noise, and evil words, be put away from you, with all unkind acts;

But if any man among you is without wisdom, let him make his request to God, who gives freely to all without an unkind word, and it will be given to him.