Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Marked by or requiring long, hard work: spent many laborious hours on the project.
- adj. Hard-working; industrious.
Century Dictionary and Cyclopedia
- Requiring much labor, exertion, or perseverance; toilsome; not easy: as, laborious duties; a laborious undertaking.
- Using exertion; practising labor; diligent in work or service; assiduous: as, a laborious husbandman or mechanic; a laborious minister or pastor.
- Characterized by labor or effort; marked by or manifesting labor.
- Synonyms Difficult arduous, wearisome, fatiguing, onerous.
- Industrious, painstaking, active, hard-working.
Wiktionary
- adj. Requiring much physical effort; toilsome.
- adj. Mentally difficult; painstaking
- adj. Industrious.
GNU Webster's 1913
- adj. Requiring labor, perseverance, or sacrifices; toilsome; tiresome.
- adj. Devoted to labor; diligent; industrious.
WordNet 3.0
- adj. characterized by effort to the point of exhaustion; especially physical effort
Etymologies
- Middle English, from Old French laborieux, from Latin labōriōsus, from labor, labor. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“The unfortunate reputation that writing often bears as being boring and laborious is likely a result of people writing about uninteresting topics and doing so only out of necessity.”
“For the most part it was a silent forest, lush and dank, where only occasionally a wood-pigeon cooed or snow - white cockatoos laughed harshly in laborious flight.”
“If woman be the weaker creature, why is she employed in laborious avocations? why compelled to endure the fatigue of household drudgery; to scrub, to scower, to labour, both late and early, while the powdered lacquey only waits at the chair, or behind the carriage of his employer?”
Letter to the Women of England, on the Injustice of Mental Subordination
“His veracity, that is, his laborious accuracy, is admitted by the only persons competent to form an opinion, namely, independent investigators who have followed in his track; but what may be called the internal evidence of the case also supplies a strong proof of it.”
“The feathers of these gay little sylphs, most of them from the Southern States, are most brilliant, and are represented with what, were it [not] connected with so much spirit in the attitude, I would call a laborious degree of execution.”
The Journal of Sir Walter Scott From the Original Manuscript at Abbotsford
“In the future, visitors will theoretically be able to go to the site when the mood strikes, much as they visit the Vietnam Veterans Memorial in Washington D.C. But for now and the next few years, accessing the Sept. 11 Memorial will entail a laborious process requiring the reservation of tickets ahead of time, and then, on the appointed date, wending through a downtown obstacle course involving two outdoor ticket screening points and a security checkpoint inside 90 West St.”
“His most stable job, obviously, was the one he had working as a rigger mechanic at the navy yard, and as I started to say, he did generally that kind of laborious work for quite a few years until the latter part of my stay at home, which was when I was about sixteen or seventeen years old.”
“Gervase, speaking of one of these species, says: -- "If anything should be to be carried on in the house, or any kind of laborious work to be done, they join themselves to the work, and expedite it with more than human facility.”
Welsh Folk-Lore a Collection of the Folk-Tales and Legends of North Wales
“These buildings have been almost entirely erected by the soldiers, who are compelled to work from morning till night at every kind of laborious employment.”
A Ramble of Six Thousand Miles through the United States of America
“Rice County Sheriff Richard Cook says the search has been "laborious" as rescuers fight a strong current and near-freezing water temperatures.”
Minneapolis/St. Paul Breaking News, Weather, Video, Traffic and Sports for Minnesota from WCCO-TV
Lists
These user-created lists contain the word ‘laborious’.
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GRE Barrons Wordlist
A complete Barron's Wordlist for GRE preparation. Your online flashcard replacement.
abase, abash, abate, abbreviate, abdicate, aberrant, aberration, abet, abeyance, abhor, abject, abjure and 4087 more...
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DAY2_01/05/2013
day 2, pundit, potentate, miscreant, renegade, timid, ribald, reprisal, dispersal, inoculate, disservice, dessicate and 33 more...
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Words I Intend to use.
selectarian, solastalgia, niefling, eldritch, santagnostic, laborious, obstreperous, quibble, inusitate, cacology, tmesis, cacoethes and 50 more...
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big book gre
abase, abbess, abbey, abbot, abdicate, abdomen, abdominal, abduction, abed, aberration, abet, abeyance and 6691 more...
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Realism
Words to describe the art during the Realist movement
reality, harsh, criticizing, working-class, labor, working, organized, status, satire, dark, masses, ordinary and 45 more...
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the first list
an immense, grandiloquent list that loads like a thousand years sentence in stone. new words are in the other lists.
ridiculous, brummagem, predicament, sanctimonious, vapid, eschew, admonish, auspicious, capitulation, enumerate, lachrymose, tenet and 1648 more...
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Words I Know
List of most of the words I've learned
garner, abase, abate, abdicate, abduct, aberration, abet, abhor, abide, abject, abjure, abnegation and 1046 more...
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polymorph's Words
pornerastic, yeaux, enantiadromia, synchronicity, transubstantiation, sensimilla, slough, scaphism, symbiosis, prolix, orgiastic, cryptogamic and 245 more...
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The Sog Collection
My big word list.
chaos, flaccid, empirical, flotsam, cacophony, grumble, assuage, awe, romance, mortality, coalesce, fortuitous and 3282 more...
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Revised GRE Wordlist_2013
Vocabulary building for my quest of GRE 2013
ephemeral, esoteric, rhetoric, censure, egregious, pittance, dupe, mulct, paucity, alacrity, maintain, laconic and 997 more...
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NTDW1
template, modal, sublingual, tandem, polycentric, septuagenarian, token, irrevocable, denotive, augural, aberrant, phlebotomy and 1188 more...
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DEF's list
Obscure Words
obfuscate, harbinger, morose, meniscus, conspicuous, grandiose, cogitated, matron, erudite, oness, apothegms, assuage and 475 more...
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Words of the Day
glabella, chirotony, nook-shotten, crapehanger, filemot, swirlie, egosurf, lexiphanicism, Ruritanian, stichometry, chrononaut, faldstool and 2014 more...
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Vocabulary
paradox, aberration, laconic, lugubrious, credulous, loquacious, deprecate, pointillistic, epigone, vehement, surly, obtuse and 359 more...
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thricedotted's Words
schadenfreude, vanquish, calumny, obsequious, rhapsody, expostulate, promontory, bordello, quintessence, catharsis, recapitulation, myriad and 937 more...
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Nigella Bites
words from the cookbook "Nigella Bites" by Nigella Lawson
intend, evangelical, present, nattering space, inevitably, consequently, techniques, liqueur, purist, frankly, constraints, jot and 256 more...
Tweets
Looking for tweets for laborious.

bilby "Now, comrades, what is the nature of this life of ours? Let us face it, our lives are miserable, laborious and short. We are born, we are given just so much food as will keep the breath in our bodies, and those of us who are capable of it are forced to work to the last atom of our strength; and the very instant that our usefulness has come to an end we are slaughtered with hideous cruelty. No animal in England knows the meaning of happiness or leisure after he is a year old. No animal in England is free. The life of an animal is misery and slavery: that is the plain truth."
- George Orwell, 'Animal Farm'. Nov 23, 2008