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

Definition of laborious

1a : involving, requiring, or characterized by hard and sustained effort : arduous Overland travel was not an adventurous communal leap, but a laborious, individual trek.— Daniel J. Boorstin Making a telescope mirror is a long and laborious process.— David Devoss and Eric Sander
b : characterized by long, detailed elaboration : tedious Much of the middle of the book is a laborious account of the scouring of the ocean floor that led to the discovery of the Titanic.The Economist
2 : devoted to labor : industrious We have the greatest riches, the greatest fertility, … the most laborious population.— Joseph Conrad

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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 This is a laborious process that requires two votes by the Legislature in consecutive sessions and another one by the people of Massachusetts., 10 June 2021 Finally three years ago Pyke started the laborious process, which included plenty of bureaucratic red tape. John Benson, cleveland, 3 June 2021 Historians have left us with inaccurate and mostly unpleasant accounts of her long and laborious years. Martha Saxton, The Conversation, 7 May 2021 To obtain their homeless mortality data, Nicholas’ team faced a laborious task. Usha Lee Mcfarling, STAT, 14 Mar. 2021 In addition to making goods available on sellers’ own sites, these software companies—which also include BigCommerce and Magento—can perform the laborious task of listing merchandise on the giants’ marketplaces. Christopher Mims, WSJ, 13 Mar. 2021 Dear Readers: Labor Day, for Miss Manners, comes with the laborious task of facing indignant messages from those who object to this holiday’s also marking the end of the white shoe season. Judith Martin, Washington Post, 7 Sep. 2020 Seeking a mandatory recall is a laborious process requiring the CPSC to pursue a court order. Los Angeles Times, 5 May 2021 The stories drift rather than drive along the narrative path, the pacing intentionally laborious at times and audio inhospitable for the express purpose of discomfort, resulting in an intrusive, claustrophobic experience. Mark Hughes, Forbes, 8 May 2021

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 2

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Time Traveler for laborious

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

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Statistics for laborious

Last Updated

15 Jun 2021

Cite this Entry

“Laborious.” Dictionary, Merriam-Webster, Accessed 25 Jun. 2021.

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More Definitions for laborious



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

More from Merriam-Webster on laborious

Nglish: Translation of laborious for Spanish Speakers

Britannica English: Translation of laborious for Arabic Speakers


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