crux

C3R1U1X8
UK/kɹʌks/Northern England/kɹʊks/Scotland, Wales/kɾʌks/US/krəks/

noun

The basic, central, or essential point or feature.

“The crux of her argument was that the roadways needed repair before anything else could be accomplished.”

Less commonScrabble 13

Meanings

crux1

nouncrux (plural cruxes or cruces)

plural cruxes · plural cruces · alternative crocs

  1. The basic, central, or essential point or feature.

    The crux of her argument was that the roadways needed repair before anything else could be accomplished.

    Synonyms: core, essence, heart, gist, bowels, sum, brass tacks, core

  2. The critical or transitional moment or issue, a turning point.

    The movie hits its dramatic crux an hour in, when Reality [Winner], at work at the contractor’s facility in Georgia, discovers what she deems a tragic scandal.

    2024 September 11, Richard Brody, ““Winner” Takes Political Comedy Seriously”, in The New Yorker, archived from the original on 03 Oct 2024
    1 more example

    The mad certitude of the ogre, Abel Tiffauges, that he stands at the crux of history and that he will be able to raise Prussia "to a higher power" (p. 180), contrasts sharply with the anxiety and doubt attendant upon most modern literary dreams.

    1993, Laurence M. Porter, “Real Dreams, Literary Dreams, and the Fantastic in Literature”, in Carol Schreier Rupprecht, editor, The Dream and the Text: Essays on Literature and Language, pages 32–47
  3. A puzzle or difficulty.

    The perpetual crux of New Testament chronologists.

    1860, Marian Evans (translator), The Life of Jesus, Critically Examined (originally by David Strauss)
    1 more example

    What I have advanced upon this species of verse will contribute to solve a poetical problem, thrown out by Dryden as a crux to his brethren

    1775, Thomas Sheridan, Lectures on the Art of Reading

    Synonyms: enigma, puzzle, riddle, conundrum

  4. climbingThe hardest point of a climb.

    the real crux of the climb was encountered

    1907, The Alpine Journal, volume 23
    3 more examples

    The final half-mile was the crux of the climb.

    1973, Pat Armstrong, "Klondike Fever: Seventy Years Too Late", in Backpacker, Autumn 1973, page 84

    Most pitches have a distinct crux, or tough spot; some have multiple cruxes. […] ¶ Climb efficiently on the "cruiser" sections to stay fresh for the cruxes.

    2004, Craig Luebben, Rock Climbing: Mastering Basic Skills, The Mountaineers Books, →ISBN, page 179

    Continue climbing the groove; the crux is passing some vegetation on the second pitch.

    2009, R. J. Secor, The High Sierra: Peaks, Passes, and Trails, Third Edition, The Mountaineers Books, →ISBN, page 51
  5. governmentA cross on a coat of arms.

Crux2

proper noun
  1. astronomyA distinctive winter constellation of the southern sky, shaped like a cross. It appears in the flags of several countries in Oceania.

    Synonyms: Southern Cross

Synonyms & antonyms

nounA puzzle or difficulty.

proper nounA distinctive winter constellation of the southern sky, shaped like a cross. It appears in the flags of several countries in Oceania.

More synonyms by meaning

nounthe most important point

Similar
crux of the matter
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

crux · noun

  1. Proto-Indo-European*(s)ker-“to turn, to bend”
  2. Latincrux“cross, wooden frame for execution”
  3. Englishcrux

Borrowed from Latin crux (“cross, wooden frame for execution”), possibly from the Proto-Indo-European *(s)ker- (“to turn, to bend”). Doublet of cross and crouch (“cross”).

Full word history & related roots →

Crux · proper noun

  1. Latincrux“a cross”
  2. EnglishCrux

Learned borrowing from Latin crux (“a cross”).

Full word history & related roots →

Translations

Arabic مَرْبِط الْفَرَس
  • مَرْبِط الْفَرَس (marbiṭ al-faras)central or essential point
Bulgarian същност на проблема, критичен момент
  • същност на проблема (săštnost na problema)central or essential point
  • критичен момент (kritičen moment)critical or transitional moment
  • затруднение (zatrudnenie)puzzle or difficulty
Catalan moll de l'os, quid
  • moll de l'oscentral or essential point
  • quidcentral or essential point
Chinese Mandarin 關鍵 /关键
  • 關鍵 /关键 (guānjiàn)central or essential point
Czech podstata, jádro
  • podstatacentral or essential point
  • jádrocentral or essential point
Dutch kruispunt
  • kruispuntcritical or transitional moment
Finnish ydin, käännekohta
  • ydincentral or essential point
  • käännekohtacritical or transitional moment
  • taitekohtacritical or transitional moment
  • hankaluuspuzzle or difficulty
  • vaikein kohtahardest part of a climb
French crux
  • cruxhardest part of a climb
German Kern (-punkt), Wendepunkt
  • Kern (-punkt)central or essential point
  • Wendepunktcritical or transitional moment
  • Cruxpuzzle or difficulty
  • Knackpunktpuzzle or difficulty
Hebrew עיקר
  • עיקר (ikar)central or essential point
Italian punto cruciale
  • punto crucialecentral or essential point
Māori tino
  • tinocentral or essential point
Polish sedno, zagadka
  • sednocentral or essential point
  • zagadkapuzzle or difficulty
Portuguese ponto crucial, momento decisivo
  • ponto crucialcentral or essential point
  • momento decisivocritical or transitional moment
Romanian punct crucial, moment decisiv
  • punct crucialcentral or essential point
  • moment decisivcritical or transitional moment
Russian основная проблема, решающий вопрос
  • основная проблема (osnovnaja problema)central or essential point
  • решающий вопрос (rešajuščij vopros)central or essential point
  • суть (sutʹ)central or essential point
Spanish punto crucial, asunto esencial
  • punto crucialcentral or essential point
  • asunto esencialcentral or essential point
  • quidcentral or essential point
  • meollocentral or essential point
  • busilispuzzle or difficulty
Swedish kärna, pudelns kärna
  • kärnacentral or essential point
  • pudelns kärnacentral or essential point
  • kruxpuzzle or difficulty
Welsh craidd
  • craiddcentral or essential point

Rhymes & wordplay

Rhymes with crux

All rhymes →

Sounds the same

crooks (without the foot–strut split)crux
Cite this entry
APA

crux. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/crux

MLA

“crux.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/crux. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “crux,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/crux.

Source: crux on Wiktionary, CC BY-SA 4.0.