"to cheat, to drive a hard bargain," 1824, from Jew (n.) (compare gyp, welsh, etc.). "Though now commonly employed without direct reference to the Jews as a race, it is regarded by them as offensive and opprobrious" [Century Dictionary, 1902]. The campaign to eliminate it in early 20c. was so successful that people also began to avoid the noun and adjective, using Hebrew instead.
Now I'll say 'a Jew' and just the word Jew sounds like a dirty word and people don't know whether to laugh or not. [Lenny Bruce, "How to Talk Dirty and Influence People," 1965]
"Siouan people of eastern Wisconsin," 1766, from Potawatomi winepyekoha, literally "person of dirty water," in reference to the muddy or fish-clogged waters of the Fox River below Lake Winnebago. As a type of motor vehicle, attested from 1966.
early 14c., "small pool of dirty water," frequentative or diminutive of Old English pudd "ditch," related to German pudeln "to splash in water" (compare poodle). Originally used of pools and ponds as well. Puddle-duck for the common domestic duck is by 1846.
word-forming element meaning "black," from Greek melano-, combining form of melas (genitive melanos) "black, dark, murky,"probably from a PIE root *melh-"black, of darkish color" (source also of Sanskrit malinah "dirty, stained, black," Lithuanian mėlynas"blue," Latin mulleus "reddish").
eighth avatar of Vishnu, 1793, from Sanskrit krshnah, literally "the Black One," from PIE *kers-no-, suffixed form of root *kers- "dark, dirty" (source also of Old Church Slavonic crunu, Russian coron, Serbo-Croatian crn, Czech cerny, Old Prussian kirsnan "black," Lithuanian keršas "black and white, variegated").
a fanciful, humorous coinage by U.S. author Jackson W. Granholm (1921-2007), "ill-assorted collection of poorly-matching parts, forming a distressing whole" (Granholm's definition), 1962, also as a verb. It persisted in the jargon of computer programmers for quick-and-dirty fixes in code. Related: Kludged; kludgy.
"filth, dirt, refuse matter, sewage, liquid likely to contain excrement," c. 1600, earlier "miry or muddy place" (early 15c.), from Old French soille "miry place," from soillier (v.) "to make dirty," and in part a native formation from soil (v.). This is the sense in archaic night-soil.
"migrant agricultural worker," especially (but not exclusively) one driven from farms in Oklahoma during the Dust Bowl, 1938, short for U.S. state of Oklahoma.
"Okie use' ta mean you was from Oklahoma. Now it means you're a dirty son-of-a-bitch." [John Steinbeck, "The Grapes of Wrath," 1939]