Antonyms of adv productively

1 sense of productively

Sense 1
productively, fruitfully, profitably -- (in a productive way; "they worked together productively for two years")
       Antonym of unproductively (Sense 1)
      => unproductively, fruitlessly, unprofitably -- (in an unproductive manner)

Synonyms of adv productively

1 sense of productively

Sense 1
productively, fruitfully, profitably -- (in a productive way; "they worked together productively for two years")