lob (n.)youdaoicibaDictYouDict[lob 词源字典]
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.[lob etymology, lob origin, 英语词源]
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.