cluttered
v. B2 Upper Intermediate US //ˈkɫətɝd// UK //klˈʌtəd// clut·tered
v. to make a space messy or full of things that are not needed. You use this when a room or a desk has too many objects in it.
v. to fill a space with an excessive number of objects, making it untidy or difficult to navigate. Often used intransitively to describe the state of a room or a digital interface.
The old desk is cluttered with papers and pens.
The living room became cluttered with holiday decorations and empty gift boxes after the party.
A cluttered workspace can significantly reduce cognitive performance by increasing the mental load required to find necessary tools and documents.