crux
C1formal, literary, academic
Definition
Meaning
The decisive or most important point at issue in a matter; a difficult problem or puzzle.
The central or pivotal point around which other elements revolve; a cross-shaped emblem or design.
Linguistics
Semantic Notes
While the word originally meant 'cross' (from Latin), its modern meaning refers to the essential, central point of a problem, often one that is hard to solve. It is almost always used with a definite article ('the crux of the matter') or possessive ('the crux of his argument').
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage.
Connotations
Slightly more common in British academic and journalistic writing, but the difference is marginal.
Frequency
Low-frequency word in both dialects, used primarily in formal contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
the crux of [noun phrase]to be/get to the crux of [noun phrase]That's the crux.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “the crux of the matter”
Usage
Context Usage
Business
Used to identify the central challenge in a strategy or negotiation. 'The crux of our financial problem is cash flow.'
Academic
Common in essays and dissertations to pinpoint the central thesis or problem. 'The crux of the author's theory hinges on this single assumption.'
Everyday
Rare in casual conversation. Might be used in serious discussions. 'Alright, let's get to the crux of this – who's responsible?'
Technical
Can be used in fields like law, philosophy, or logic to denote a pivotal argument or flaw.
Examples
By CEFR Level
- The crux of the story is that the hero must learn to be brave.
- We've discussed the details for hours, but the crux of the issue is funding.
- The judge identified the contradictory testimonies as the legal crux of the case. The philosophical crux of his thesis challenges fundamental notions of consciousness.
Learning
Memory Aids
Mnemonic
Think of a crossword puzzle (a cross) where the most important, central clue is the CRUX. Without solving it, you can't complete the puzzle.
Conceptual Metaphor
A PROBLEM/ARGUMENT IS A STRUCTURE (with a central supporting point). A PUZZLE IS A KNOT (the hardest part to untie).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation to 'крест' (cross). The modern meaning is 'суть', 'основная трудность', 'сердцевина проблемы'.
- Do not confuse with 'crisis' (кризис).
Common Mistakes
- Using it as a countable noun without 'the' (e.g., 'a crux' is very rare).
- Misspelling as 'crutch' or 'crush'.
- Using it to mean just 'a problem' instead of 'the central point of a problem'.
Practice
Quiz
What is the most accurate synonym for 'crux' in the sentence: 'The crux of her argument was undeniable.'?
FAQ
Frequently Asked Questions
Yes, it is primarily used in formal, academic, and literary contexts. It is uncommon in casual everyday speech.
It is extremely rare. The word is almost always used with the definite article 'the' (the crux of...) as it refers to a specific central point within a larger context.
It comes directly from Latin 'crux', meaning 'cross'. The sense of a 'puzzling difficulty' (1590s) comes from 'crux interpretum' (an interpreter's cross), a difficult passage in a text. The meaning 'central point' developed from this.
Yes. 'Crucial' comes from the same Latin root. Something 'crucial' is of decisive importance, relating to the 'crux' or turning point.
Explore