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laborious

[luh-bawr-ee-uh s, -bohr-] /ləˈbɔr i əs, -ˈboʊr-/
adjective
1.
requiring much work, exertion, or perseverance:
a laborious undertaking.
2.
characterized by or requiring extreme care and much attention to detail:
laborious research.
3.
characterized by or exhibiting excessive effort, dullness, and lack of spontaneity; labored:
a strained, laborious plot.
4.
given to or diligent in work:
a careful, laborious craftsman.
Origin of laborious
1350-1400
1350-1400; Middle English < Latin labōriōsus. See labor, -ious
Related forms
laboriously, adverb
laboriousness, noun
quasi-laborious, adjective
quasi-laboriously, adverb
superlaborious, adjective
superlaboriously, adverb
superlaboriousness, noun
unlaborious, adjective
unlaboriously, adverb
unlaboriousness, noun
Synonyms
1. toilsome, arduous, onerous, burdensome, difficult, hard, tiresome, wearisome, fatiguing. 4. hardworking, industrious, assiduous, sedulous, painstaking.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for laborious
Contemporary Examples
Historical Examples
  • Anthea woke the Psammead with laborious gentleness to put the question.

  • For his perilous and laborious work it was better, he judged, that he should not be married.

    Weighed and Wanting George MacDonald
  • We have the greatest riches, the greatest fertility, the purest blood in our great families, the most laborious population.

  • Under these laborious shades a whole world of light revealed itself.

    The Dream Emile Zola
  • With my thumb and finger I annihilated the laborious monuments of centuries, and saw havoc and desolation in our wake.

    Summer Cruising in the South Seas Charles Warren Stoddard
British Dictionary definitions for laborious

laborious

/ləˈbɔːrɪəs/
adjective
1.
involving great exertion or long effort
2.
given to working hard
3.
(of literary style, etc) not fluent
Derived Forms
laboriously, adverb
laboriousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for laborious
adj.

late 14c., "hard-working, industrious," from Old French laborios "arduous, wearisome; hard-working" (12c., Modern French laborieux), from Latin laboriosus "toilsome, wearisome, troublesome," from labor (see labor (n.)). Meaning "costing much labor, burdensome" is from early 15c.; meaning "resulting from hard work" is mid-15c. Related: Laboriousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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