Unprofitably Synonyms and Antonyms

Without gain or profit
(Adverb)
Synonyms:
  1. profitlessly
  2. gainlessly
In an unproductive manner
(Adverb)
Synonyms:
  1. unproductively
  2. fruitlessly
Antonyms:
  1. productively
  2. fruitfully
  3. profitably