Synonyms of 'grateful'
thankfulDictionary, obliged, in (someone's) debt
She was grateful to him for all his help.
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If you are appreciative of something, you are grateful for it.
We are very appreciative of their support.
If you are beholden to someone, you are in debt to them in some way or you feel that you have a duty to them because they have helped you.
He was made beholden to the Mafia.
Thesaurus for grateful from the Collins English Thesaurus
If you are grateful for something that someone has given you or done for you, you have warm , friendly feelings towards them and wish to thank them.