A mix of the words "sweet" and "sick" together with the french word for very.
Should only be used for something uber awsome.
Some one just gave me a free convertable full of hundred dollar bills!
That's tres swick!
When something is really sweet, meaning amazing, and wicked at the same time.
Rob: "Hey John was that party last night?"
John: "One word,... swicked."
When something is more than sick and wicked at the same time. Sick being wicked and wicked being sick! In this situation, Sick = cool and wicked = cool
Eg 1. That backflip was ‘SWICKED’!
Eg 2. Marcie Thomas is swicked girl, I love to be around her.