General terms:
* Bayaw: This is the most common and versatile term for brother-in-law, regardless of gender.
* Hipag: This term is used for the sister of your spouse.
More specific terms:
* Bayaw (lalaki): This is used specifically for a male brother-in-law.
* Bayaw (babae): This is used specifically for a female brother-in-law.
Other options:
* Asawa ng kapatid: Literally meaning "spouse of sibling." This is a more formal way of saying brother-in-law.
* Kapatid ng asawa: Literally meaning "sibling of spouse." This is also a formal way of saying brother-in-law.
It's best to use bayaw unless you need to be more specific about the gender of the brother-in-law.