•ingratitude (the feeling or attitude of one who is ungrateful; behavior with expresses this feeling or attitude) · inappropriateness, unfavorableness (the quality of that which is not appropriate, not favorable, not conducive to a desired state or situation)
köken: From Middle High German undanc, from Old High German undank, undanc (“unthankfulness”), from Proto-West Germanic *unþank, from Proto-Germanic *unþankaz, equivalent to un- + Dank. Cognate with Dutch ondank, Old English unþanc ("unfavour, unpleasure, anger, ill-will"; whence modern English unthank).
From nepateicīgs (“ungrateful”) + -ums, with nepateicīgs from ne- + pateicīgs (“grateful, thankful”) and pateicīgs from pateikt(ies) (“to thank”) + -īgs, with k > c via palatalization.