General terms:
* लाल मिर्च (laal mirch): This literally means "red pepper" and is a general term for chili peppers. It's the most common and widely understood term.
* काली मिर्च (kaali mirch): This literally means "black pepper" and is often used for cayenne pepper as it has a similar color. However, it's not as accurate.
More specific terms:
* कैयेन मिर्च (kayen mirch): This is the most accurate translation of "cayenne pepper." However, it's not as commonly used as "laal mirch."
* लाल मिर्च पाउडर (laal mirch powder): This refers to cayenne pepper powder, which is the most common form.
* शिमला मिर्च (shimla mirch): This literally means "Simla pepper" and refers to bell peppers. While not directly cayenne pepper, it is often used to refer to any type of pepper.
The best way to say cayenne pepper in Hindi will depend on the specific context and the person you are speaking to.