sharpen
B2Neutral, used in both formal and informal contexts.
Definition
Meaning
To make or become sharp or sharper, typically referring to an edge or point.
To improve something or make it more effective, intense, or focused; to enhance skills, senses, or understanding.
Linguistics
Semantic Notes
The verb encompasses both literal (physical sharpening) and figurative (improvement, intensification) meanings. The figurative use often implies moving towards a state of greater effectiveness, clarity, or precision.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Minor variation possible in context (e.g., 'sharpen up' slightly more common in UK informal speech).
Connotations
Identical in both varieties.
Frequency
Similar frequency in both corpora. The literal sense may be slightly more common in American domestic product advertising.
Vocabulary
Collocations
Grammar
Valency Patterns
[NP] sharpen [NP] (transitive)[NP] sharpen (intransitive)[NP] sharpen up (phrasal verb)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Sharpen your pencil (be prepared to negotiate or work hard)”
- “Sharpen your wits”
Usage
Context Usage
Business
Used to discuss improving skills, strategies, or competitive edge: 'We need to sharpen our marketing approach.'
Academic
Used figuratively for refining arguments, analysis, or intellectual focus: 'The study sharpens our understanding of the phenomenon.'
Everyday
Most common in literal contexts (sharpening knives, pencils) and general self-improvement: 'I'm taking a course to sharpen my Spanish.'
Technical
In computing/photography: to enhance the clarity of a digital image by increasing contrast at edges.
Examples
By Part of Speech
verb
British English
- Could you sharpen these kitchen knives before the dinner party?
- He went to night school to sharpen up his maths.
- The outline of the hills sharpened as the mist cleared.
American English
- I need to sharpen all these pencils for the test.
- The company is sharpening its strategy to compete online.
- Her critique really sharpened my thinking on the issue.
adverb
British English
- 'Sharpen' does not have a direct adverb form. The related adverb is 'sharply'.
American English
- 'Sharpen' does not have a direct adverb form. The related adverb is 'sharply'.
adjective
British English
- 'Sharpening' as a verbal adjective: 'a sharpening conflict', 'sharpening tools'.
American English
- 'Sharpening' as a verbal adjective: 'the sharpening pain', 'a sharpening stone'.
Examples
By CEFR Level
- Please sharpen this pencil for me.
- My mum sharpens the big knife to cut meat.
- You should sharpen your knife before carving the turkey.
- Practising regularly will sharpen your language skills.
- The political crisis has sharpened divisions within the community.
- The photographer used software to sharpen the blurry edges of the image.
- The new evidence served to sharpen the prosecution's argument considerably.
- Years of diplomatic work had sharpened her ability to navigate complex negotiations.
Learning
Memory Aids
Mnemonic
Think of a SHARP PEN. To SHARPEN your pencil is to make your writing instrument SHARP.
Conceptual Metaphor
ACUITY IS SHARPNESS (e.g., sharp mind, sharp debate). IMPROVEMENT IS MAKING SHARP.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid using 'sharpen' for making something more spicy or sour (use 'spice up' or 'add acidity').
- Do not confuse with 'sharper' (a noun meaning swindler) or 'sharply' (adverb).
- The Russian verb 'точить' covers 'sharpen', but also 'grind' and 'turn' on a lathe; 'sharpen' is more specific.
Common Mistakes
- Incorrect: 'I need to sharpen my computer skills on this software.' (Better: 'improve' or 'hone')
- Incorrect: 'The chef sharpened the soup with more pepper.' (Use 'spiced up' or 'seasoned').
- Spelling error: 'sharping' (correct: 'sharpening').
Practice
Quiz
In which context is the use of 'sharpen' MOST likely figurative?
FAQ
Frequently Asked Questions
No, it is very commonly used figuratively for skills, minds, focus, arguments, and senses.
Literally, 'sharpen' is general; 'hone' implies fine-tuning an already sharp edge; 'whet' specifically means to sharpen by rubbing (as a whetstone) and is common in 'whet one's appetite'. Figuratively, they are often interchangeable, but 'hone' suggests meticulous refinement.
Yes, meaning 'to become sharp'. Example: 'The pain in his side sharpened suddenly.'
Yes, particularly in British English, meaning to improve quickly or make oneself more alert/effective. Example: 'You'd better sharpen up if you want to keep your job.'