[uncountable, singular] (disapproving) a lot of things in an untidy state, especially things that are not necessary or are not being used; a state of confusion synonym mess There's always so much clutter on your desk! There was a clutter of bottles and tubes on the shelf. See related entries: Furniture Word Origin late Middle English: variant of dialect clotter ‘to clot’, influenced by cluster and clatter.Extra examples The cat managed to find a spot to sleep amidst all the clutter of my study. The garage is in such a clutter that we can’t find anything. The tune is lost in a clutter of noise. to get rid of screen clutter The attic is full of clutter: carpets, old chairs, tables, children’s toys and suchlike. There was a clutter of bottles, glasses and ashtrays on the table. There’s always so much clutter on your desk! Try to avoid clutter in the workplace.