Herculean

/hɜːɹˈkjuːliən/

//hɜːɹˈkjuːliən// adj

By · According to Wiktionary data (CC BY-SA) ·

"herculean" is a 9-letter English headword indexed on PlainSpell.

The verdict

“Herculean” is uncommon English (frequency #51,753 among 23,837 “H” headwords), classed as an adjective. The kind of spelling people second-guess.

#51,753
frequency rank, English
23,837
“H” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Of extraordinary might, power, size, etc.; suggesting Hercules in size or strength.

Key facts for Herculean
PropertyValue
HeadwordHerculean
LanguageEnglish
Part of speechAdjective
IPA/hɜːɹˈkjuːliən/
Letters9
Frequency rank#51,753
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “Herculean” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). Herculean lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

Herculean is uncommon English at frequency #51,753 among 23,837 “H” headwords, classed as anadjective, transcribed /hɜːɹˈkjuːliən/. Rarity is why readers land here mid-draft. 2 senses are on record.

Zero misspellings are on record for Herculean in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Hercules + -an. The correct English form is Herculean, spelled H-E-R-C-U-L-E-A-N.

Definition

  1. 1
    Of extraordinary might, power, size, etc.; suggesting Hercules in size or strength.
  2. 2
    Requiring a huge amount of work; of extraordinary difficulty.

Etymology

From Hercules + -an.

This word in other languages

hercúleo(Español)herculéen(Français)herkulisch(Deutsch)hercúleo(Português)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "Herculean"?
"Herculean" is spelled H-E-R-C-U-L-E-A-N. The IPA pronunciation is /hɜːɹˈkjuːliən/.
What does "Herculean" mean?
As an adjective, "Herculean" means: Of extraordinary might, power, size, etc.; suggesting Hercules in size or strength.
How do you pronounce "Herculean"?
The IPA (International Phonetic Alphabet) transcription for "Herculean" is /hɜːɹˈkjuːliən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "Herculean"?
From Hercules + -an. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “Herculean”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is H-E-R-C-U-L-E-A-N - every other letter order is a misspelling in standard orthography.
  • Say it as /hɜːɹˈkjuːliən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list