Ingrateful

CIDE DICTIONARY

Ingrateful, a. [L. ingratus ingrateful (pref. in- not + gratus beloved, dear, grateful) + -ful: cf. F. ingrat. See Grateful.].

Ungrateful; thankless; unappreciative. Milton. [1913 Webster]
"He proved extremely false and ingrateful to me." [1913 Webster]
Unpleasing to the sense; distasteful; offensive. [1913 Webster]
"He gives . . . no ingrateful food."