Related Clues:

• Make more acute
• Get sharp
• It might help you make the cut
• Improve, as an edge
• Sharpen, as skills
• Tweak, say
• Improve in small increments
• Tweak a bill
• Make keener
• Make a point?
• Use a strop on
• Make a change to
• Alter to make better
• Write a codicil
• Modify, as a law