fatta noll

fatta (“understand”) +‎ noll (“zero”)

fatta noll (present fattar noll, preterite fattade noll, supine fattat noll, imperative fatta noll)

1. (idiomatic) to not understand anything, to not get it at all

   Kan du tyda de här instruktionerna åt mig? Jag fattar noll.

   Can you interpret these instructions for me? I understand zilch.

• noll in Svensk ordbok (SO)