Words related to sour

"lysergic acid diethylamide," 1950 (as LSD 25), from German LSD (1947), from letters in Lysergsäure-diäthylamid, the German form of the chemical name. For first element, see lysergic. German säure "acid" is cognate with English sour (adj.).
sauerkraut (n.)

"a favorite German dish consisting of cabbage cut fine, pressed, salted, and fermented until sour," 1630s, from German Sauerkraut, literally "sour cabbage," from sauer "sour" (from Proto-Germanic *sura-; see sour (adj.)) + Kraut "vegetable, cabbage," from Old High German krut, from Proto-Germanic *kruthan.

They pickle it [cabbage] up in all high Germany, with salt and barberies, and so keepe it all the yeere, being commonly the first dish you have served in at table, which they call their sawerkrant. [James Hart, "Klinike, or the diet of the diseased," 1633]

In U.S. slang, figurative use for "a German" dates from 1858 (compare kraut). "The effort to substitute liberty-cabbage for sauerkraut, made by professional patriots in 1918, was a complete failure." [Mencken]. French choucroute (19c.) is the German word, but via Alsatian German surkrut but with folk etymology alteration in French based on chou "cabbage" + croûte "crust" (n.).

sorrel (n.)
small perennial plant, late 14c., from Old French surele (12c., Modern French surelle), from sur "sour," from Frankish *sur or some other Germanic source, from Proto-Germanic *sura- "sour" (source also of Old High German, Old English sur "sour;" see sour (adj.)). So called for the taste of its leaves.
sourball (n.)
1900 as "constantly grumbling person;" 1914 as a type of candy; from sour (adj.) + ball (n.1).
sourdough (n.)
early 14c., "leavened bread," also "leaven" (late 14c.), from sour (adj.) + dough. Meaning "fermented dough" is from 1868. The meaning "Arctic prospector or pioneer" is from 1898 Yukon gold rush, from the practice of saving a lump of fermented dough as leaven for raising bread baked during the winter.
sourly (adv.)
1530s, from sour (adj.) + -ly (2).
sourness (n.)
Old English surnes; see sour (adj.) + -ness.
sourpuss (n.)
1937, from sour (adj.) + puss (n.2) "face."