Kindheart

[…] 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.

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.