Formal:
* ਜੀਜਾ (Jeeja): This is the most common and formal term for brother-in-law, used for the brother of your spouse.
Informal:
* ਸਾਲਾ (Saala): This is a more informal and playful term for brother-in-law, often used among close family members. It can also be used as a term of endearment.
Other:
* ਸਹੁਰਾ (Sahura): This term is used for the father-in-law's brother, which could be considered a brother-in-law in a wider sense.
* ਬਰਾਤ ਵਾਲਾ (Barat Wala): This phrase literally means "one who came with the wedding procession," and is sometimes used to refer to a brother-in-law.
The best way to use these terms depends on the context and the specific relationship. It's always good to ask a Punjabi speaker for clarification if you're unsure.