clut ‧ ter 1 /ˈklʌtə $ -ər/ BrE AmE ( 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