- 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
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for laborious
But through most of the 20th century, printing documents remained an expensive, laborious process.Pioneers in Printing
The Daily Beast
October 21, 2014
Depression is often a laborious uphill struggle for the sufferer and their loved ones.The Burden Robin Williams Carried: Diagnosed With Parkinson’s and Depression
Dr. Anand Veeravagu, MD, Tej Azad
August 15, 2014
Leo Valencia, the owner of World Logistics MIA, agreed to help Lobo with the laborious task of moving the palettes of Nexcite.Sexually-Charged Napalm Sculptures Debut at Gallery Diet in Miami
March 14, 2014
As a result, this season has often felt less like an organic narrative than a laborious calculation.‘Still Positive’ Shows Why ‘Homeland’ Hasn’t Jumped the Shark (Yet)
November 4, 2013
Once a laborious process that took months, modern labs now can buzz through an entire genome in hours.Happy Summer. You’re Covered in Fungus.
July 5, 2013
It is his magnum opus in literature, and exhibits wide and laborious research.The Grand Old Man
Richard B. Cook
For his perilous and laborious work it was better, he judged, that he should not be married.Weighed and Wanting
Under these laborious shades a whole world of light revealed itself.The Dream
Life here is laborious, but downright want I should say rare.In the Heart of Vosges
O the days that he had seen her careful and laborious for him!Little Dorrit
- involving great exertion or long effort
- given to working hard
- (of literary style, etc) not fluent
Word Origin and History for laborious
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.