schlump
Concise Oxford English Dictionary © 2008 Oxford University Press:
schlump /ʃlʊmp/
▶noun N. Amer. informal a slow, slovenly, or inept person.
– origin 1940s: appar. rel. to Yiddish shlumperdik ‘dowdy’ and Ger. Schlumpe ‘slattern’.
'schlump' also found in these Oxford entries:

