She set the saucer down and tried to wipe off the milk, while the cat crouched before the dish and began drinking eagerly and unthankfully, after the manner of cats.
"The Eye of Dread"
Payne Erskine
It is good to look back on hours like these, though I doubt if the ill-cooked meats, whereof I hope soon to partake-not unthankfully-will be improved by the memory.
"Border and Bastille"
George A. Lawrence
So did I love thee true and faithfully, For which I am rewarded most unthankfully.
"Fair Em A Pleasant Commodie Of Faire Em The Millers Daughter Of Manchester With The Love Of William The Conquerour"
William Shakespeare (Apocrypha)