Unthankfully

adv. [UN-¹ 11.] Ungratefully.

a. 1470.  Harding, Chron., CXXXIII. i. He awnswered hym full vnthankefully.

1531.  Elyot, Gov., III. ii. The riches that he hym selfe gaue hym, whiche the other unthankefully dothe attribute to his owne fortune.

1577.  trans. Bullinger’s Decades, 285/2. Such as do vnthankfully abuse the benefites … of their good God.

c. 1620.  Moryson, Itin., IV. V. iii. (1903), 475. This all experienced strangers doe confesse, but they vnthanckfully misconceaue the cause.

1697.  Verdicts conc. Virgil & Homer, v. 21. If these shipwrackt Banditti came sneakingly to Carthage, they go from it as unthankfully.

1814.  Wordsw., Excursion, IV. 479. You judge unthankfully; distempered nerves Infect the thoughts.

1848.  Dickens, Dombey, xlvii. A stubborn disposition … unthankfully indulged in.