Chilli powder is a common spice used in many cuisines around the world. It is made from dried ground chilli peppers and usually has a hot and spicy flavor. Other synonyms for chilli powder include cayenne pepper, paprika, red pepper, and red pepper flakes. Cayenne pepper is known for its fiery heat and is commonly used in Mexican and Southwestern cuisine. Paprika, on the other hand, is a milder option that is often used in Hungarian and Spanish dishes. Red pepper flakes are a popular choice for adding heat to Italian and Mediterranean dishes. Whatever your preference, these chilli powder substitutes can add a flavorful kick to your favorite recipes.