English to English

adverb (r)

• in an ineffective manner(adv.all)

  Example:
  He dealt with the problem rather ineffectively.
  

  Synonym:
  inefficaciously
  Antonym:
  effectively, efficaciously
  

  source: wordnet30
• In an ineffective manner; without effect; inefficiently; ineffectually.(adverb)

  source: webster1913