This is the 2237th most frequent Swedish word.
super
"Super" in Swedish means "drinks alcohol" (informal).
Here, "super" is used as a prefix to intensify the adjective "interesting".
Jag tycker att den här boken är superintressant.
I think this book is super interesting.
In this context, "super" is a verb meaning "to drink alcohol excessively".
Hon super på helgerna med sina vänner.
She drinks on weekends with her friends.
Again, "super" is employed as a prefix to amplify the adjective "fun".