Here are a couple of options depending on the context:
* You could simply use "Carmel" as it is. This would be understood, particularly if you are referring to a specific place like Mount Carmel.
* You could translate the meaning of Carmel. For example, if you are referring to Mount Carmel and its religious significance, you could say "Mlima wa Karmeli" (Mountain of Carmel).
It's important to consider the context and your audience to determine the best way to communicate "Carmel" in Swahili.