false-hearted

The charming Eyes of Madame de R—— made me forget the false-hearted Creature on whom I had doated.

From The Memoirs of Charles-Lewis, Baron de Pollnitz, Volume III Being the Observations He Made in His Late Travels from Prussia thro' Germany, Italy, France, Flanders, Holland, England, &C. in Letters to His Friend. Discovering Not Only the Present State of the Chief Cities and Towns; but the Characters of the Principal Persons at the Several Courts. by Karl Ludwig von P?llnitz

Fool I was, in truth; but it was to yield to the bad advice my false and false-hearted friend tendered.

From Peter the Whaler by Henry Austin

There comes a gleam on the billowy moat Like a death-light on its wave, It streams from the ivied lattice, where Sits a grim false-hearted knave.

From Traditions of Lancashire, Volume 2 by John Roby

Forgotten so soon Are thy vows when we parted, Have other links bound thee, Thou fickle false-hearted?

From The Legendary and Poetical Remains of John Roby author of 'Traditions of Lancashire', with a sketch of his literary life and character by John Roby

This is another instance of what so often seems to us a matter of wonder,—the power of a narrow-minded, mean-spirited, ill-tempered, false-hearted man to inflict pain on a noble and lofty nature.

From The Farmer Boy, and How He Became Commander-In-Chief by William M. (William Makepeace) Thayer