Clutter

What is Clutter ?

Clutter is (noun) a mass of things left lying about All this clutter will be cleared away by the weekend. Synonym mess (NOTE: no plural)(verb) to fill a room, etc., with a mass of things Her desk is cluttered with papers and invoices. Don’t clutter your mind with useless information. Synonym encumber

 

source: Easier English, Student Dictionary Upper Intermediate Level