How do you say hello in coast Salish language?

There isn't one single "Coast Salish language." Coast Salish is actually a group of closely related languages spoken by Indigenous peoples along the coast of British Columbia, Washington, and Oregon.

Here are some greetings in a few Coast Salish languages:

* Hul'q'umi'num' (also known as Halkomelem): "Siyam" (pronounced SEE-yam)

* Squamish: "Sə́lə́" (pronounced suh-LAY)

* Lə́lə́q'emél (also known as Lummi): "Sə́lə́" (pronounced suh-LAY)

It's important to remember that there are many different dialects within each of these languages, and pronunciations may vary slightly.

If you're trying to learn a specific Coast Salish language, it's best to consult with a language learner or fluent speaker of that specific language to ensure you are using the correct greetings.