sharpen

1. a. To make sharp. Source: opted

2. a. To give a keen edge or fine point to; to make sharper; as, to sharpen an ax, or the teeth of a saw. Source: opted

3. a. To render more quick or acute in perception; to make more ready or ingenious. Source: opted

4. a. To make more eager; as, to sharpen men's desires. Source: opted

5. a. To make more pungent and intense; as, to sharpen a pain or disease. Source: opted

6. a. To make biting, sarcastic, or severe. Source: opted

7. a. To render more shrill or piercing. Source: opted

8. a. To make more tart or acid; to make sour; as, the rays of the sun sharpen vinegar. Source: opted

9. a. To raise, as a sound, by means of a sharp; to apply a sharp to. Source: opted

10. v. i. To grow or become sharp. Source: opted

11. v. make sharp or sharper Source: wordnet

12. v. make crisp or more crisp and precise Source: wordnet

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