laborious
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la·bo·ri·ous

adjective \lə-ˈbr-ē-əs\

Definition of LABORIOUS

1
: devoted to labor : industrious
2
: involving or characterized by hard or toilsome effort : labored
la·bo·ri·ous·ly adverb
la·bo·ri·ous·ness noun

Examples of LABORIOUS

  1. a slow and laborious process
  2. <the volunteers have been commendably laborious in their cleanup of the beach>

First Known Use of LABORIOUS

14th century

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