From English - German Ding/FreeDict dictionary ver. 1.9-fd1: clutter up /klˈʌtəɹ ˈʌp/ vollstopfen <v, trans> see: cluttering up, cluttered up
clutter up /klˈʌtəɹ ˈʌp/ vollstopfen <v, trans> see: cluttering up, cluttered up