Ungrateful
Pronunciation : Un*grate"ful
Part of Speech : a.
Definition : 1. Not grateful; not thankful for favors; making no returns, or making ill return for kindness, attention, etc.; ingrateful. South.
2. Unpleasing; unacceptable; disagreeable; as, harsh sounds are ungrateful to the ear. -- Un*grate"ful*ly, adv. -- Un*grate"ful*ness, n.
Source : Webster's Unabridged Dictionary, 1913