sharpen
[verb]
Synonyms: whet, edge, grind, hone

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Antonyms: blunt, dull
Related Idioms: hone to a razor edge, hone to razor sharpness
Related Words: dress, file, grind, stroke

[TahlilGaran] English Synonym Dictionary ▲

sharp‧en /ˈʃɑːpən $ ˈʃɑːr-/ verb
[Word Family: noun: sharpener, sharpness, sharp; adverb: sharp, sharply, sharpish; verb: sharpen; adjective: sharp]

1. [intransitive and transitive] to make something have a sharper edge or point, or to become sharper:
Anne sharpened her pencil and got out her homework.

2. [transitive] to make a feeling stronger and more urgent:
A series of attacks have sharpened fears of more violence.

3. [transitive] (also sharpen something ↔ up) to improve something so that it is up to the necessary standard, quality etc:
The course will help students sharpen their writing skills.

[TahlilGaran] Dictionary of Contemporary English ▲