كويس (kwayyis) is an Egyptian word:
(masculine: كويس /kwayyis/ - feminine: كويسة /kwayyisa/ - plural: كويسين /kwayyiseen/)
* As an adjective:
It means well or fine
E.g.
- ازيك؟ = How are you?
- كويس = Fine
* As an adverb:
It means well
E.g. نمت كويس؟ = Did you sleep well?