laborious

[ luh-bawr-ee-uhs, -bohr- ]
/ ləˈbɔr i əs, -ˈboʊr- /

adjective

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.

Nearby words

  1. laboratory diagnosis,
  2. laboratory school,
  3. labored,
  4. laboredly,
  5. laborer,
  6. laboriously,
  7. laborism,
  8. laborite,
  9. labors of hercules,
  10. laborsaving

Origin of laborious

First recorded in 1350–1400; Middle English word from Latin word labōriōsus. See labor, -ious

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for laborious


British Dictionary definitions for laborious

laborious

/ (ləˈbɔːrɪəs) /

adjective

involving great exertion or long effort
given to working hard
(of literary style, etc) not fluent
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 laborious

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