Here are some other ways to say goodnight in Flemish, depending on the context:
* "Slaap wel" (pronounced "slahp vel") - This literally translates to "Sleep well" and is a more formal way to say goodnight.
* "Tot morgen" (pronounced "tot mor-ghen") - This means "Until tomorrow" and is a friendly way to say goodnight.
* "Tot straks" (pronounced "tot straks") - This means "See you soon" and is a casual way to say goodnight if you expect to see the person again soon.
Remember that Flemish is a dialect of Dutch, so you can also use the Dutch word "Goedenacht" (pronounced "goo-den-ahkt"). However, "Goeie nacht" is more commonly used in Flemish.