Standard Lemma guide

crux

name · noun · 8 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /kɹʌks/
  • US: Recorded audio is listed in the source snapshot.
  • Australia: Recorded audio is listed in the source snapshot.
  • homophone: crux
  • Northern-England: /kɹʊks/
  • Scotland, Wales: /kɾʌks/
  • US: /kɹʌks/
  • US: /krəks/
  • Australian: /kɹɐks/
  • rhymes with -ʌks
  • homophone: crooks (without the foot-strut split)
  • CMU ARPABET: K R AH1 K S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

name

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Topics: astronomy, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Southern Cross

Antonyms: none provided

2

noun

Meaning 2

The basic, central, or essential point or feature.

Definition source: English Wiktionary via Wiktextract

Examples

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

Meaning relationships

Synonyms: core, essence, heart, gist, bowels, sum, brass tacks, crux, drift, guts, gravamen, heart and soul, heartstring, heartstrings, inwardness, kernel, marrow, meat, moral of the story, nitty-gritty, nub, nuts and bolts, pith, punctum saliens, quintessence, soul, spirit, stuff, substance, tenor

Antonyms: none provided

3

noun

Meaning 3

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

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A puzzle or difficulty.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: enigma, puzzle, riddle, conundrum

Antonyms: none provided

5

noun

Meaning 5

The hardest point of a climb.

Definition source: English Wiktionary via Wiktextract

Topics: climbing, hobbies, lifestyle, sports

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A cross on a coat of arms.

Definition source: English Wiktionary via Wiktextract

Topics: government, heraldry, hobbies, lifestyle, monarchy, nobility, politics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

the most important point

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: crux of the matter

Antonyms: none provided

Broader terms: point

Narrower terms: alpha and omega

8

noun

Meaning 8

a small conspicuous constellation in the southern hemisphere in the Milky Way near Centaurus

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Southern Cross, Crux Australis

Antonyms: none provided

Broader terms: constellation

History

Etymology

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

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”).

Across languages

Translations

45 source translations are retained for this English entry.

  • Arabic: مَرْبِط الْفَرَس (marbiṭ al-faras) — central or essential point
  • Armenian: առանցքային կետ (aṙancʻkʻayin ket) — central or essential point
  • Armenian: առանցք (aṙancʻkʻ) — central or essential point
  • Bulgarian: същност на проблема (sǎštnost na problema) — central or essential point
  • Catalan: moll de l'os — central or essential point
  • Catalan: quid — central or essential point
  • Chinese Mandarin: 關鍵 /关键 (guānjiàn) — central or essential point
  • Czech: podstata — central or essential point
  • Czech: jádro — central or essential point
  • Finnish: ydin — central or essential point
  • German: Kern (-punkt) — central or essential point
  • Hebrew: עיקר (ikar) — central or essential point
  • Italian: punto cruciale — central or essential point
  • Malayalam: കാര്യം (kāryaṁ) — central or essential point
  • Māori: tino — central or essential point
  • Polish: sedno — central or essential point
  • Portuguese: ponto crucial — central or essential point
  • Romanian: punct crucial — central or essential point
  • Russian: основная проблема (osnovnaja problema) — central or essential point
  • Russian: решающий вопрос (rešajuščij vopros) — central or essential point
  • Russian: суть (sutʹ) — central or essential point
  • Spanish: punto crucial — central or essential point
  • Spanish: asunto esencial — central or essential point
  • Spanish: quid — central or essential point
  • Spanish: meollo — central or essential point
  • Swedish: kärna — central or essential point
  • Swedish: pudelns kärna — central or essential point
  • Welsh: craidd — central or essential point
  • Armenian: շրջադարձային կետ (šrǰadarjayin ket) — critical or transitional moment
  • Bulgarian: критичен момент (kritičen moment) — critical or transitional moment
  • Dutch: kruispunt — critical or transitional moment
  • Finnish: käännekohta — critical or transitional moment
  • Finnish: taitekohta — critical or transitional moment
  • German: Wendepunkt — critical or transitional moment
  • Portuguese: momento decisivo — critical or transitional moment
  • Romanian: moment decisiv — critical or transitional moment
  • Bulgarian: затруднение (zatrudnenie) — puzzle or difficulty
  • Finnish: hankaluus — puzzle or difficulty
  • German: Crux — puzzle or difficulty
  • German: Knackpunkt — puzzle or difficulty
  • Polish: zagadka — puzzle or difficulty
  • Spanish: busilis — puzzle or difficulty
  • Swedish: krux — puzzle or difficulty
  • Finnish: vaikein kohta — hardest part of a climb
  • French: crux — hardest part of a climb