thankworthy
adjective
Forms thankworthier thankworthiest
Etymology
From Middle English thankworthy, thank-worthy, þankeworþi, probably an alteration (with -y) of earlier Middle English thanke worth, thankworth, þancwurðe (“thankworthy”), from Old English þancwyrþe, þancweorþ (“thankworthy, deserving thanks, acceptable”), equivalent to thank + -worthy. Cognate with German dankwürdig (“worthy of thanks”).
Webster’s 1913
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “thankworthy”, CC BY-SA 4.0. Details