la·​bo·​ri·​ous | \ lə-ˈbȯr-ē-əs How to pronounce laborious (audio) \

Definition of laborious

1 : devoted to labor : industrious as men of research … they are magnificently laborious and accurate— Aldous Huxley
2 : involving or characterized by hard or toilsome effort : labored The climb to the summit was slow and laborious.

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Other Words from laborious

laboriously adverb
laboriousness noun

Examples of laborious in a Sentence

a slow and laborious process the volunteers have been commendably laborious in their cleanup of the beach
Recent Examples on the Web But the laborious recertification process, coupled with increasingly fractious relationships with the Federal Aviation Administration, airlines, and other stakeholders prompted a quicker timeline. Natasha Frost, Quartz at Work, "Can Boeing’s new CEO rescue the troubled company?," 13 Jan. 2020 The stock has been listless for much of the period since then; even with the cut, chipping away at debts in a post-boom environment is a laborious process. Liam Denning | Bloomberg, Washington Post, "EnLink’s 20% Yield Is Everything Wrong With America’s Pipelines," 15 Nov. 2019 Instead of a product, baseball has a laborious process that last season took more than seven months to complete before Dallas Keuchel and Craig Kimbrel finally signed in June., "How are you handling all the excitement?," 12 Nov. 2019 These more sophisticated rodents cost five to seven times as much, because using them is more laborious and time-consuming than traditional animal models. Jennifer Couzin-frankel, Science | AAAS, "As epilepsy drugs fail nearly one-third of patients, scientists seek root causes of seizures," 12 Dec. 2019 After the project had ground through a laborious bureaucratic approval process, Muller was baffled by the latest delay. Rachel Swan,, "Golden Gate Bridge suicide nets delayed two years, as people keep jumping," 12 Dec. 2019 While cities like Seattle have offered opportunities for individuals to clear their records, the process is often laborious and bureaucratic. Brendan Bures,, "How Silicon Valley is helping overturn marijuana convictions," 17 Oct. 2019 Under the Obama administration, the CFPB began the laborious process of drafting federal regulations. Anjali Tsui, ProPublica, "They Loan You Money. Then They Get a Warrant for Your Arrest.," 3 Dec. 2019 The demolition of the cranes is just one step in what is sure to be a long, laborious, and expensive response to the deadly collapse., "Two construction cranes that loomed over the collapsed Hard Rock Hotel came crashing down Sunday afternoon in New Orleans, as city officials used carefully timed explosions meant to minimize damage downtown.," 21 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'laborious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of laborious

14th century, in the meaning defined at sense 1

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Time Traveler for laborious

Time Traveler

The first known use of laborious was in the 14th century

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Statistics for laborious

Last Updated

26 Jan 2020

Cite this Entry

“Laborious.” The Dictionary, Merriam-Webster Inc., Accessed 26 January 2020.

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More Definitions for laborious


How to pronounce laborious (audio)

English Language Learners Definition of laborious

: requiring a lot of time and effort


la·​bo·​ri·​ous | \ lə-ˈbȯr-ē-əs How to pronounce laborious (audio) \

Kids Definition of laborious

: requiring much effort Rebuilding was a slow and laborious task.

Other Words from laborious

laboriously adverb

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Comments on laborious

What made you want to look up laborious? Please tell us where you read or heard it (including the quote, if possible).


to express in a more acceptable way

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