Common Phrases:
* Ki sa ki pase? - This is a very common and versatile phrase that can be used in most situations.
* Ki nouvèl? - This translates to "What news?" and is another way to inquire about what's going on.
* Kouman ou ye? - This means "How are you?" and can be used as a friendly greeting that also implies inquiring about what's new.
* Sa w ap fè? - This literally translates to "What are you doing?" and is more casual and direct.
Informal Slang:
* Kisa'w ap fè? - This is a shortened, more informal version of "Sa w ap fè?".
* Sa w ap kouri dèyè? - This literally translates to "What are you running after?" and is a playful, colloquial way to ask what's up.
* Kisa'w ap fè nan lavi sa a? - This is a funny and slightly ironic way to ask what's up, literally translating to "What are you doing in this life?"
Note: The specific pronunciation and spelling of these phrases can vary slightly depending on the region and dialect of Creole being spoken.
Ultimately, the best way to learn how to say "What is up?" in Creole is to practice with native speakers and listen to how they use these phrases in everyday conversation.