Synonyms for Gratifying (same or very similar meaning)
WordNet sense 1 (giving pleasure or satisfaction):
satisfying, appreciated
WordNet sense 2 (pleasing to the mind or feeling):
sweet
WordNet sense 3 (giving pleasure and satisfaction):
pleasing
WordNet sense 4 (affording satisfaction or pleasure):
enjoyable, pleasurable
WordNet sense 5 (affording pleasure; being in harmony with your taste or likings):
pleasant
From the ODE community, based on WordNet
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