clutter up
US /ˈklʌt.ər ʌp/
UK /ˈklʌt.ər ʌp/
1.
rommelen, volproppen
to fill a space or area with too many things, making it untidy
:
•
Please don't clutter up the table with your books.
Gelieve de tafel niet te rommelen met je boeken.
•
The old furniture was cluttering up the attic.
Het oude meubilair rommelde de zolder op.