Gratefully Synonyms and Antonyms

With appreciation; in a grateful manner
(Adverb)
Antonyms:
  1. unappreciatively
  2. ungratefully
Synonyms:
(Adjective)
  1. with a sense of obligation
  2. delightedly
  3. responsively
  4. admiringly
Antonyms:
  1. rudely
  2. thanklessly