clut‧ter¹ /ˈklʌtə $ -ər/ (also clutter up) verb [transitive]
[Date: 1500-1600; Origin: clot]

1. to cover or fill a space or room with too many things, so that it looks very untidy:
Piles of books and papers cluttered his desk.
be cluttered (up) with something
The walls were cluttered with paintings and prints.

2. to fill your mind with a lot of different things:
the everyday tasks that clutter our lives
—cluttered adjective

[TahlilGaran] Dictionary of Contemporary English ▲