Learn how to say Grateful correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word grateful:
feeling or showing an appreciation for something done or received:
I’m grateful to you for all your help
she gave him a grateful smile
archaic received or experienced with gratitude; welcome:
the grateful shade
mid 16th century: from obsolete grate ‘pleasing, thankful’ (from Latin gratus) + -ful