Verses with the word thankfulness in the Apocrypha (2 verses):

Sirach 37:11
Neither consult with a woman touching her of whom she is jealous; neither with a coward in matters of war; nor with a merchant concerning exchange; nor with a buyer of selling; nor with an envious man of thankfulness; nor with an unmerciful man touching kindness; nor with the slothful for any work; nor with an hireling for a year of finishing work; nor with an idle servant of much business: hearken not unto these in any matter of counsel.

Additions to Esther 16:4
And take not only thankfulness away from among men, but also lifted up with the glorious words of lewd persons, that were never good, they think to escape the justice of God, that seeth all things and hateth evil.