sharpen

/ˈʃɑrpən/
verb
  1. To make something (such as a blade, pencil, or tool) have a thin, pointed, or cutting edge.
    • He used a whetstone to sharpen the kitchen knife.
    • The barber sharpens his straight razor every morning.
    • Please sharpen your pencil before the test.
  2. To improve or make something more effective, clear, or intense.
    • The debate helped sharpen her arguments.
    • Practicing puzzles can sharpen your mind.
    • The photographer sharpened the image using editing software.
  3. To become sharper or more intense.
    • His focus sharpened when he heard the news.
    • As the storm approached, the wind sharpened.
    • The pain in her knee sharpened after the long run.
Antonyms
What does "sharpen" mean? | whatsthatwordmean | whatsthatwordmean