herculean

adjective

ˌhər-kyə-ˈlē-ən How to pronounce herculean (audio)
Definition of herculeannext
1
as in difficult
requiring considerable physical or mental effort the herculean task of grading 60 student essays over one weekend

Synonyms & Similar Words

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Antonyms & Near Antonyms
2
as in enormous
unusually large a herculean banquet table that took eight men to lift it

Synonyms & Similar Words

Antonyms & Near Antonyms

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 herculean George Lucas, for his part, has suggested that bringing the Lucas Museum to fruition—a project beset by delays and controversy that has taken nearly a decade to realize—was a herculean effort. — Alex Greenberger, ARTnews.com, 3 Sep. 2026 The herculean effort For residents in a small community known as Rainbow Hill, the outlook is dire. — Megan Schrader, Denver Post, 27 Aug. 2026 The novel caught on slowly through word of mouth, aided by the herculean efforts of his niece Aron Ritchie, who found ways to increase the book’s visibility. — Mike Fleming Jr, Deadline, 19 Aug. 2026 Even the herculean efforts to acquire capabilities for the conflict with Iran largely amounted to a collection of waivers, special actions, and brute-force leadership. — Doug Beck, Foreign Affairs, 18 Aug. 2026 Viewed through a 2026 lens, this now antiquated process seems like a herculean undertaking, one that somehow worked. — Michael Ashley, Forbes.com, 12 Aug. 2026 Republicans started laying the groundwork for the herculean task of flipping Michigan the day after Rogers lost to Slotkin. — Burgess Everett, semafor.com, 6 Aug. 2026 However, SpaceX would need to 10x in three or four years to reach $1 trillion—a herculean feat given that bullish analysts have projected less than half that for 2030. — Amanda Gerut, Fortune, 4 Aug. 2026 The commission’s remit amounts to a herculean task for the future. — Taylor Luck, Christian Science Monitor, 4 Aug. 2026
Recent Examples of Synonyms for herculean
  1. difficult
  2. enormous
  3. challenging
  4. huge
  5. tough
  6. tremendous
  7. formidable
  8. gigantic
Adjective
  • Being undefeated after a trio of difficult opening matches can only be seen as a positive, even if Newcastle’s obvious shortcomings require addressing if that run is to be prolonged.
    — Chris Waugh, New York Times, 6 Sep. 2026
  • Engineers need flight data on propulsion, aerodynamics, thermal management, guidance and other subsystems under conditions that are difficult to reproduce on the ground.
    — Bojan Stojkovski, Interesting Engineering, 6 Sep. 2026
Definition of difficult
Adjective
  • Light can carry enormous amounts of information, and optical connections can offer high bandwidth over relatively long distances.
    — Kaif Shaikh, Interesting Engineering, 5 Sep. 2026
  • Perhaps Vance’s affection for Carlson has more to do with holding the loyalty of his friend’s enormous audience.
    — Jonathan Chait, The Atlantic, 5 Sep. 2026
Definition of enormous
Adjective
  • Eric Loucks, the director of the Mindfulness Center at Brown, pointed out that a person can have a challenging experience during meditation and still find their overall meditation practice to be beneficial.
    — Olga Khazan, The Atlantic, 4 Sep. 2026
  • For something more hands-on, Atlanta Motorsports Park in Dawsonville has a challenging kart circuit where karts can reach 50 mph or more.
    — Chris Teague, AJC.com, 4 Sep. 2026
Definition of challenging
Adjective
  • Golden Tempo, meanwhile, assumed his position near the back of the field as his deep closing style has delivered huge glory in the past.
    — Danny Brewer, Forbes.com, 30 Aug. 2026
  • At least 788 people have been killed in Nepal following huge torrents along the Nepal-China border on Wednesday, according to local police.
    — Bhadra Sharma, CNN Money, 30 Aug. 2026
Definition of huge
Adjective
  • Space-grade electronics will cost more, and the ball’s shell—made from a material tough enough to roll over steel shards and withstand minus 184 °C temperatures—has never been evaluated in lunar extremes.
    — IEEE Spectrum, IEEE Spectrum, 3 Sep. 2026
  • Democratic leaders face tough decisions on where to spend limited party resources to win the Senate majority.
    — Burgess Everett, semafor.com, 3 Sep. 2026
Definition of tough
Adjective
  • Keenum, in his 15th season, remains a tremendous resource for both younger quarterbacks.
    — Dan Wiederer, New York Times, 30 Aug. 2026
  • First of all, with its WFI, it's meant to process a tremendous amount of data in relatively short periods of time in order to survey gigantic zones of our cosmos.
    — Monisha Ravisetti, Space.com, 30 Aug. 2026
Definition of tremendous
Adjective
  • Greenspan was renowned for his formidable data-crunching capabilities, sharp reading of market psychology, and subtle, often elusive communication style.
    — , CNBC, 28 Aug. 2026
  • Their armory is formidable; their cash supply, a source of comic relief.
    — Amy Nicholson, Los Angeles Times, 28 Aug. 2026
Definition of formidable
Adjective
  • Steinem, who struggled with stage fright most of her life, talked with women at gigantic conferences and in intimate kaffeeklatsches.
    — Los Angeles Times, Los Angeles Times, 3 Sep. 2026
  • But chaos ensues when Nick and Troy hijack one of those parade vehicles that just happens to be equipped with a gigantic nuclear bomb.
    — Pete Hammond, Deadline, 2 Sep. 2026
Definition of gigantic

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Cite this Entry

“Herculean.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/herculean. Accessed 6 Sep. 2026.

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