niggardly Look up niggardly at Dictionary.com
1560s, from niggard.
"It was while giving a speech in Washington, to a very international audience, about the British theft of the Elgin marbles from the Parthenon. I described the attitude of the current British authorities as 'niggardly.' Nobody said anything, but I privately resolved—having felt the word hanging in the air a bit—to say 'parsimonious' from then on." [Christopher Hitchens, "The Pernicious Effects of Banning Words," Slate.com, Dec. 4, 2006]
stingy Look up stingy at Dictionary.com
"niggardly, penurious, tight-fisted," 1659, possibly a dialectal alteration of earlier stingy "biting, sharp, stinging" (c.1615), from sting (v.). Back-formation stinge "a stingy person" is recorded from 1914.
niggard Look up niggard at Dictionary.com
mid-14c., nygart, of uncertain origin. The suffix suggests French origin (cf. -ard), but the root word is probably related to O.N. hnøggr "stingy," from P.Gmc. *khnauwjaz (cf. Swed. njugg "close, careful," Ger. genau "precise, exact"), and to O.E. hneaw "stingy, niggardly," which did not survive in M.E.