• synonyms


[luh-bawr-ee-uhs, -bohr-]
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  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.
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Origin of laborious

First recorded in 1350–1400; Middle English word from Latin word labōriōsus. See labor, -ious
Related formsla·bo·ri·ous·ly, adverbla·bo·ri·ous·ness, nounqua·si-la·bo·ri·ous, adjectivequa·si-la·bo·ri·ous·ly, adverbsu·per·la·bo·ri·ous, adjectivesu·per·la·bo·ri·ous·ly, adverbsu·per·la·bo·ri·ous·ness, nounun·la·bo·ri·ous, adjectiveun·la·bo·ri·ous·ly, adverbun·la·bo·ri·ous·ness, noun

Synonyms for laborious

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for laboriousness

predicament, complication, dilemma, hardship, hazard, snag, obstacle, struggle, frustration, pain, trouble, deadlock, crisis, adversity, vigor, quickness, intensity, earnestness, alertness, exertion

Examples from the Web for laboriousness

Historical Examples of laboriousness

  • The chief characteristic is the minute laboriousness of the execution.

    Across the Equator

    Thomas H. Reid

  • And it is just in those areas that one may see at their best the grit, laboriousness, and enterprise of the Moplah.

  • There, in fine, is the place where real lassitude must be undergone by the body in laboriousness.

  • He says that the laboriousness of Stevenson and Flaubert has 'gone out' and the public are bored by it.

    The Secret Life

    Elizabeth Bisland

  • Gas will be made on a larger scale, with less dirt and nuisance, and without that laboriousness now made necessary.

British Dictionary definitions for laboriousness


  1. involving great exertion or long effort
  2. given to working hard
  3. (of literary style, etc) not fluent
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Derived Formslaboriously, adverblaboriousness, 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

Word Origin and History for laboriousness



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.

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Online Etymology Dictionary, © 2010 Douglas Harper