←
Middle Dutch schūme (derived)
←
Middle English scum (inherited)
←
Middle English scome (mention)
←
Middle English skum (mention)
←
Middle English skome (mention)
←
Middle English scumme (mention)
←
Proto-Indo-European *skew- (derived)
←
Lithuanian šamas (cognate)
→
Interlingua scuma (derived)
→
Luxembourgish Schaum (cognate)
→
German Low German Schuum (link)
→
Pennsylvania German Schaam (cognate)
→
Saterland Frisian Skuum (link)