kindheart

plural kindhearts

1. rareA kindhearted person.

   It could as likely be a killer as a kindheart, and he had no wish for the knife within him to be matched by a real knife of iron from without.

   1992, The World, John Grant

   1 more example

   […] he has nary a Sword-and-Bucklerman in his Fair, nor a little Davy to take toll o' the Bawds there, as in my time, nor a Kindheart, if anybody's teeth should chance to ache in his Play.

   c. 1614, Ben Jonson, Bartholomew Fair