laborious


la·bo·ri·ous

adjective \lə-ˈbr-ē-əs\

: requiring a lot of time and effort

Full 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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