Antonyms of adv gratefully

1 of 2 senses of gratefully

Sense 1
appreciatively, gratefully -- (with appreciation; in a grateful manner; "he accepted my offer appreciatively")
       Antonym of ungratefully (Sense 1)
      => ungratefully, unappreciatively -- (in an ungrateful manner)

Synonyms of adv gratefully

2 senses of gratefully

Sense 1
appreciatively, gratefully -- (with appreciation; in a grateful manner; "he accepted my offer appreciatively")

Sense 2
thankfully, gratefully -- (in a thankful manner; with thanks; "he accepted thankfully my apologies")