American English

Definition of laborious adjective from the Oxford Advanced American Dictionary

     

    laborious

     adjective
    adjective
    NAmE//ləˈbɔriəs//
     
     
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  1. 1taking a lot of time and effort synonym onerous, taxing
  2. 2 a laborious task/process Checking all the information will be slow and laborious.
laboriously
 
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adverb An agreement was laboriously worked out.
See the Oxford Advanced Learner's Dictionary entry: laborious