ingrateful

adjective2

1. •
   (no longer used) ungrateful; not grateful

   • […] under change of times, / And condemnation of the ingrateful multitude. — 1671
2. •
   (no longer used) unpleasing to the sense; distasteful

   • Therefore what he gives / (Whose praise be ever sung) to man in part / Spiritual, may of purest Spirits be found / No ingrateful food — 1667