Un‐grate″ful (?), a. 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.