1
as in diligent
involved in often constant activity
the volunteers have been commendably laborious in their cleanup of the beach
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2
as in difficult
requiring considerable physical or mental effort
the laborious task of cleaning up the oil spill
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3
as in challenging
requiring much time, effort, or careful attention
that report is the product of months of laborious research
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Examples of laborious in a Sentence
Recent Examples on the Web
The deadline for filing those claims was later extended multiple times before the trustee could begin the process of separating legitimate claims from bogus ones, itself a laborious and time-consuming process.
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Joel Khalili, WIRED, 5 July 2024
Calculating that expression by hand was both laborious and error-prone.
—Michael Moyer, Quanta Magazine, 2 Aug. 2024
The work will be laborious if only because the Coliseum has only one access point from outside — the tunnel where Trojan football players run onto the field.
—David Wharton, Los Angeles Times, 27 June 2024
Afternoon highs of over 100 degrees and, in some area, over 110 degrees, were forecast across California, much of which was under excessive heat advisories as the weather service urged people to avoid laborious outdoor activity, according to the weather service.
—Christopher Cann, USA TODAY, 6 June 2024
See all Example Sentences for laborious 
Joel Khalili, WIRED, 5 July 2024
Calculating that expression by hand was both laborious and error-prone.
—Michael Moyer, Quanta Magazine, 2 Aug. 2024
The work will be laborious if only because the Coliseum has only one access point from outside — the tunnel where Trojan football players run onto the field.
—David Wharton, Los Angeles Times, 27 June 2024
Afternoon highs of over 100 degrees and, in some area, over 110 degrees, were forecast across California, much of which was under excessive heat advisories as the weather service urged people to avoid laborious outdoor activity, according to the weather service.
—Christopher Cann, USA TODAY, 6 June 2024
See all Example Sentences for laborious
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'laborious.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Laborious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/laborious. Accessed 20 Sep. 2024.
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