laborious - definition and synonyms

adjective 

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/ləˈbɔːriəs/
  1. 1
    a laborious job or process is long, difficult, and often boring

    We eventually began the laborious task of sorting through his papers.

  2. 2
    a laborious way of doing something is slow or boring and therefore annoys people

    The author has a somewhat laborious style of writing.

derived words

laboriously

adverb