lob (n.)youdaoicibaDictYouDict
a word of widespread application to lumpish things, probably in Old English. Compare Middle Dutch, Middle Low German lobbe, Old Norse lubba. From late 13c. as a surname; meaning "pollack" is from early 14c.; that of "lazy lout" is from late 14c.
squab (n.)youdaoicibaDictYouDict
1680s, "very young bird," earlier (1630s) "unformed, lumpish person" and used at various times for any sort of flabby mass, such as sofa cushions; probably from a Scandinavian word (compare dialectal Swedish skvabb "loose or fat flesh," skvabba "fat woman"), from Proto-Germanic *(s)kwab-. Klein lists cognates in Old Prussian gawabo "toad," Old Church Slavonic zaba "frog."
lumpenyoudaoicibaDictYouDict
"(In Marxist contexts) uninterested in revolutionary advancement", 1940s: back-formation from lumpenproletariat; the sense 'misshapen, ponderous' is by association with lumpish.