grate·ful 
(grātfəl)
(grātfəl)adj.
1. Appreciative of benefits received; thankful: I'm grateful for your help.
2. Expressing gratitude: a grateful look.
3. Affording pleasure or comfort; agreeable: grateful relief from the hot sun.
[From obsolete grate, pleasing, from Latin grātus; see gwerə-2 in the Appendix of Indo-European roots.]
grateful·ly adv.
grateful·ness n.