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[luh-bawr-ee-uh s, -bohr-] /ləˈbɔr i əs, -ˈboʊr-/
requiring much work, exertion, or perseverance:
a laborious undertaking.
characterized by or requiring extreme care and much attention to detail:
laborious research.
characterized by or exhibiting excessive effort, dullness, and lack of spontaneity; labored:
a strained, laborious plot.
given to or diligent in work:
a careful, laborious craftsman.
Origin of laborious
First recorded in 1350-1400; Middle English word from Latin word 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
1. toilsome, arduous, onerous, burdensome, difficult, hard, tiresome, wearisome, fatiguing. 4. hardworking, industrious, assiduous, sedulous, painstaking. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for laboriously
Contemporary Examples
Historical Examples
  • The parson had seated himself by the stove, and was laboriously removing his arctics.

    Tiverton Tales Alice Brown
  • He measured these round his waist, and then began to stitch them together, slowly and laboriously.

    Henry Dunbar M. E. Braddon
  • He laboriously made out a document, which Banker as laboriously signed.

    Louisiana Lou William West Winter
  • He found the ladder and laboriously dragged it beneath the window.

    Thankful's Inheritance Joseph C. Lincoln
  • His dress has been laboriously genteel, but is torn and soiled.

    Dr. Sevier George W. Cable
  • Nor was he enamoured of any reputation, the essentials of which he had not laboriously achieved.

    Agesilaus Xenophon
  • They have not to spell out temperaments slowly and laboriously.

    One Of Them Charles James Lever
  • "Tell us," said Phyllis laboriously, "about diploma——" and there it stuck.

British Dictionary definitions for laboriously


involving great exertion or long effort
given to working hard
(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 laboriously

early 15c., "with difficulty, laboriously, slowly," from laborious + -ly (2). Meaning "earnestly, strongly" is from c.1500.



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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