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.

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 laboriousness

British Dictionary definitions for laboriousness

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 laboriousness

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