One of the mysteries of the English language finally explained.
1‘first sharpen the carving knife’
make sharp, make sharper, hone, whet, strop, grind, file
rare edge, acuminate
2‘the world's top players are sharpening up their grass court skills before Wimbledon’
improve, brush up, polish up, better, enhance
hone, refine, fine-tune, perfect
In this article we explore how to impress employers with a spot-on CV.