massvis

massa (“mass”) +‎ -vis (“wise”)

massvis (not comparable)

1. lots, tons

   Det var massvis med poliser på brottsplatsen

   There was lots of police at the crime scene

   Vi åt massvis med glass

   We ate tons of ice cream

Most idiomatic with med (“with”), though av (“of”) also occurs.

• “massvis”, in Svensk ordbok [Dictionary of Swedish] (in Swedish)
• “massvis”, in Svenska Akademiens ordlista [Wordlist of the Swedish Academy] (in Swedish)
• “massvis”, in Svenska Akademiens ordbok [Dictionary of the Swedish Academy] (in Swedish)