This is the 6777th most frequent Catalan word.
super
"Super" in Catalan means "super" or "great."
In this sentence, 'super' is used as an informal amplifier to emphasize the adjective 'interessant', indicating a high degree of interest.
Aquest llibre és super interessant.
This book is super interesting.
Here, 'super' is a colloquial shortening of the word 'supermercat', commonly used in casual speech to refer to the supermarket.
Vaig al super cada dissabte.
I go to the supermarket every Saturday.
In this case, 'super' is part of the compound noun 'superheroi', meaning 'superhero', where 'super' denotes considerable or extraordinary qualities.