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Synonyms

grueling

American  
[groo-uh-ling, groo-ling] / ˈgru ə lɪŋ, ˈgru lɪŋ /
especially British, gruelling

adjective

  1. exhausting; very tiring; arduously severe.

    the grueling Boston marathon.


noun

  1. any trying or exhausting procedure or experience.

Other Word Forms

Etymology

Origin of grueling

First recorded in 1850–55; slang gruel “punishment” (noun), “to punish” (verb) + -ing 1, -ing 2

Explanation

If a job is grueling, that means it is really difficult. If a race is grueling, that means it is really difficult. If a trip to the dentist is grueling, that means you need to toughen up. Once upon a time in a land far far away (like eighteenth century England) there was an expression, to “get one’s gruel,” which meant “receive one’s punishment.” This saying morphed into the word grueling, which can be applied to any punishing activity. Presumably, to “get one’s gruel” involved horrible punishments, but now the more pampered among us might even find a long tennis match grueling.

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Vocabulary lists containing grueling

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“Survivor 50” castaway Joe Hunter has made it to the final tribal council of the grueling competition show twice, but walked away with slim to none when it came to jury votes.

From Los Angeles Times • May 22, 2026

One morning in April, a bleary-eyed Michelle plopped into bed fully clothed after completing her grueling 11 p.m. to 7:30 a.m. shift.

From Los Angeles Times • May 8, 2026

In grueling endurance sports like cycling, and now running, athletes are gobbling down unprecedented amounts of sugary carbohydrates, both in training and competition, via fast-acting gels and bottles loaded with glucose and fructose.

From The Wall Street Journal • Apr. 28, 2026

Enacting change at the federal level has been a grueling process.

From Barron's • Apr. 22, 2026

She’d spent a month training with them one burning summer, and her muscles still ached at the memory of their grueling exercises.

From "Throne of Glass" by Sarah J. Maas

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