súper: although the RAE recommends that super be an unaccented prefix (e.g. superimportante), the accented form -súper- is frequently seen as a separate word, acting as an adverb.
-Es un tema superinteresante (súper interesante) — It's a really interesting topic
-Mi dio un regalo superchulo (súper chulo) — He gave me a really cool present
-Lo pasamos superbien (súper bien) — We had a fantastic time
-Pasó superrápido (súper rápido) — It went by dead quick
