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laborious adjective

  /ləˈbɔːɹiəs/
  • Requiring much physical effort; toilsome.
 laborioso
  • Mentally difficult; painstaking.
 dispendioso

laboriousness

laboriosidad

laboriously adverb

  /ləˈbɔɹ.i.əs.li/ , /ləˈbɔː.ɹi.əs.lɪ/
  • With great expenditure of effort, in a manner requiring much labor.
 laboriosamente
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