Hi, yes the Swedes love abbreviations in the colloquial, and it's often an ending with "-is". So remember that if "avis" actually is cutesy for "avundsjuk", also "sotis" is colloquial shortening for "svartsjuk", i.e. jealous. Don't get it? It refers to soot - "sot" - black as soot! Svart som sot, i.e. sotis! I've always found this funny.