Antonyms of adv effectively

1 of 2 senses of effectively

Sense 1
efficaciously, effectively -- (in an effective manner; "these are real problems that can be dealt with most effectively by rational discussion")
       Antonym of ineffectively (Sense 1)
      => inefficaciously, ineffectively -- (in an ineffective manner; "he dealt with the problem rather ineffectively")

Synonyms of adv effectively

2 senses of effectively

Sense 1
efficaciously, effectively -- (in an effective manner; "these are real problems that can be dealt with most effectively by rational discussion")

Sense 2
effectively, in effect -- (in actuality or reality or fact; "she is effectively his wife"; "in effect, they had no choice")