Definition of 'sharpen'

Verb

1. make sharp or sharper; "sharpen the knives"
      Antonyms: dull blunt
2. make sharp or sharper; "We had to sharpen our arguments"
3. become sharp or sharper; "The debate sharpened"
4. put (an image) into focus; "Please focus the image; we cannot enjoy the movie"
      Synonyms: focus focalize focalise
      Antonyms: blur blear
5. make (images or sounds) sharp or sharper
      Antonyms: soften
6. raise the pitch of (musical notes)
      Antonyms: flatten drop
7. give a point to; "The candles are tapered"
      Synonyms: taper point
8. make (one's senses) more acute; "This drug will sharpen your vision"
      Synonyms: heighten

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