1. Sharpening (as in sharpening a knife):
* Pagpapakinis (formal)
* Pagpapaangat (formal, more specific to improving a skill)
* Panggigiling (informal)
* Paghahasa (for sharpening tools)
2. Improving (as in honing skills):
* Pagpapaunlad (formal)
* Pagpapalakas (formal)
* Pagpapahusay (informal)
* Pagsasanay (practice)
3. Refining (as in honing a craft):
* Pagpipino
* Pagpapabuti (improve)
Example sentences:
* "Pinahuhusay niya ang kanyang mga kasanayan sa pag-awit." (He is honing his singing skills.)
* "Kailangan mong patalasin ang iyong kutsilyo." (You need to hone your knife.)
* "Nag-eensayo siya upang mapabuti ang kanyang mga kasanayan." (He is practicing to hone his skills.)
The best translation will depend on the specific context of how you're using the word "honing."