soupyoudaoicibaDictYouDict[soup 词源字典]
soup: [17] Soup was borrowed from French soupe. This, like its English relative sop, originally denoted a ‘piece of bread soaked in liquid’. One way of making such sops was to put them in the bottom of a bowl and pour broth over them, and eventually soupe came to denote the ‘broth’ itself – the sense in which English acquired it. The word was descended from late Latin suppa, a derivative of the verb *suppāre ‘soak’, which was formed from the borrowed Germanic base *sup- (source of English sop and sup ‘drink’).
=> sop, sup, supper[soup etymology, soup origin, 英语词源]
soup (n.)youdaoicibaDictYouDict
"liquid food," 1650s, from French soupe "soup, broth" (13c.), from Late Latin suppa "bread soaked in broth," from a Germanic source (compare Middle Dutch sop "sop, broth"), from Proto-Germanic *sup-, from PIE *sub-, from root *seue- (2) "to take liquid" (see sup (v.2)).

Primordial soup is from a concept first expressed 1929 by J.B.S. Haldane. Soup to nuts "everything" is from 1910. Soup-kitchen, "public establishment supported by voluntary contributions, for preparing and serving soup to the poor at no cost" is attested from 1839. In Ireland, souper meant "Protestant clergyman seeking to make proselytes by dispensing soup in charity" (1854).
soup (v.)youdaoicibaDictYouDict
"increase the horsepower of an engine," 1921, probably from soup (n.) in slang sense of "narcotic injected into horses to make them run faster" (1911), influenced by supercharge (v.).