Definition of onerousnext

Synonym Chooser

How does the adjective onerous contrast with its synonyms?

Some common synonyms of onerous are burdensome, exacting, and oppressive. While all these words mean "imposing hardship," onerous stresses being laborious and heavy especially because distasteful.

the onerous task of cleaning up the mess

In what contexts can burdensome take the place of onerous?

The synonyms burdensome and onerous are sometimes interchangeable, but burdensome suggests causing mental as well as physical strain.

burdensome responsibilities

Where would exacting be a reasonable alternative to onerous?

While the synonyms exacting and onerous are close in meaning, exacting implies rigor or sternness rather than tyranny or injustice in the demands made or in the one demanding.

an exacting employer

When might oppressive be a better fit than onerous?

In some situations, the words oppressive and onerous are roughly equivalent. However, oppressive implies extreme harshness or severity in what is imposed.

the oppressive tyranny of a police state

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of onerous Their options without the United States are bleak and onerous. Nick Paton Walsh, CNN Money, 21 Jan. 2026 His Department of Health has not asked the Legislature to fill in the funding, though Ladapo on Wednesday suggested there may be funding solutions that aren’t onerous. Lawrence Mower, Miami Herald, 14 Jan. 2026 Explain the mechanism that Washington used to compel quarterback Demond Williams to return because the consequences were too onerous to ignore, like LSU losing out on $4 million in NIL for 2026 or however it’s phrased. Jon Wilner, Mercury News, 9 Jan. 2026 Taxes in Illinois on income, sales, real estate and everything else are higher than 47 of the 50 states, with exorbitant property taxes easily the most onerous. Andy Shaw, Chicago Tribune, 7 Jan. 2026 See All Example Sentences for onerous
Recent Examples of Synonyms for onerous
Adjective
  • Going through a severe injury is probably the toughest thing an athlete can go through.
    DJ Siddiqi, Forbes.com, 29 Jan. 2026
  • More companies are dialing back flexible work schedules and mandating that employees return to the office part-time or full-time, forcing women into tough situations.
    Jessica Guynn, USA Today, 29 Jan. 2026
Adjective
  • If some species can continue reproducing even under challenging conditions, that resilience could buy ecosystems valuable time.
    Melissa Cristina Márquez, Forbes.com, 29 Jan. 2026
  • Much of Shrinking revolves around people going through challenging times and healing through finding love, such as Paul (Harrison Ford) beginning a relationship with his doctor.
    Skyler Trepel, PEOPLE, 28 Jan. 2026
Adjective
  • Before Getting Started When cleaning your oven, try to avoid using harsh oven cleaners or using the self-cleaning feature.
    Daley Quinn, Southern Living, 29 Jan. 2026
  • The origin of clemency is understood through the Federalist Papers as a need for mercy in instances when the criminal justice system was too harsh.
    Kinsey Crowley, USA Today, 29 Jan. 2026
Adjective
  • This requires the difficult task of collecting precise, real-world measurements of complex nuclei and comparing the measurements with the models’ predictions.
    Prabhat Ranjan Mishra, Interesting Engineering, 2 Feb. 2026
  • While that process may prove difficult, the suspension option was hardly better.
    Zach LaChance, The Washington Examiner, 2 Feb. 2026
Adjective
  • Enoch confronts the celestial hosts, all wearing capes of swastika red under an oppressive horizon of jutting lightning and glaring orange mountains.
    Literary Hub, Literary Hub, 29 Jan. 2026
  • The film adapts Xianzhe Xu’s comic series and unfolds during China’s Sui Dynasty under Emperor Yang Guang’s oppressive reign.
    Naman Ramachandran, Variety, 27 Jan. 2026
Adjective
  • Yet Emery — an intense and demanding coach — asks for specific traits from his No 10s, including the ability to shield the ball from opponents and defend as intelligently as a full-back while also offering a clear goal threat.
    James Pearce, New York Times, 3 Feb. 2026
  • Juggling demanding apparitions alongside staff burnout, family pressures and a coworker who seems to know more about her than expected, the series grounds its supernatural premise in the cultural specificity of the Filipino healthcare experience.
    Naman Ramachandran, Variety, 3 Feb. 2026
Adjective
  • Nowhere perhaps was the searing heat more evident than at Melbourne Park, where the usual crowds thronging outside the Australian Open tennis tournament dwindled to a ghost town as temperatures soared.
    CBS News, CBS News, 27 Jan. 2026
  • Some might call it a searing eyesore.
    New Atlas, New Atlas, 25 Jan. 2026
Adjective
  • In practice, the process is slow, burdensome, and uncertain.
    James Broughel, Forbes.com, 30 Jan. 2026
  • This overreach and weaponization of the government manifested especially clearly in burdensome regulations and guidance; in extensive and onerous supervisions; in investigations and cases, frequently leading to crushing penalties and injunctive terms unrelated to actual harm.
    Stephan Bisaha, NPR, 21 Jan. 2026

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Cite this Entry

“Onerous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/onerous. Accessed 4 Feb. 2026.

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