adverb (r)

• in an incompetent manner(adv.all)

  Example:
  He did the job rather incompetently.
  

  Synonym:
  displaying incompetence
  Antonym:
  ably, aptly, capably, competently
  

  source: wordnet30
• In an competent manner; inadequately; unsuitably.(adverb)

  source: webster1913