Where does “kassering” come from?

kassering (Swedish) comes from Swedish kassera, from French casser, from Old French quasser, from Latin quassō, from Latin -tō, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “kassering”, step by step

StepLanguageWordMeaning
1Swedishkasserareject, nullify
2Frenchcasserto break; to break up
3Old Frenchquasserto break; to annul; to quash
4Latinquassōto shake repeatedly, to quake
5Latin-tōForms here
6Latin-tusForms the past participle of verbs; Forms...
7Proto-Italic-tus
8Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tus