शार्पन
sharpen
To sharpen means to make something sharp or to improve it, like making a pencil pointy or making a skill better.
You say 'sharpen' like this: shar-pun.
The word 'sharpen' comes from the Old English word 'scearpian', which means to make sharp.
The word 'sharpen' in Hindi is 'तेज करना' (Tez Karna).