Antonyms of adv impressively

1 sense of impressively

Sense 1
impressively, imposingly -- (in an impressive manner; "the students progressed impressively fast")
       Antonym of unimpressively (Sense 1)
      => unimpressively -- (in an unimpressive manner; "she scored unimpressively low in the first round of the competition")

Synonyms of adv impressively

1 sense of impressively

Sense 1
impressively, imposingly -- (in an impressive manner; "the students progressed impressively fast")