late 14c., nasti, "foul, filthy, dirty, unclean," literally or figuratively, a word of uncertain origin. Middle English Compendium says from Old Norse (compare Swedish dialectal and Danish naskug, nasket "dirty, nasty") with Middle English adjectival suffix -i. There was a variant nasky in early Modern English.
Barnhart suggests Old French nastre "miserly, envious, malicious, spiteful," shortened form of villenastre "infamous, bad," from vilain "villain" (see villain) + -astre, pejorative suffix, from Latin -aster. Another alternative etymology [mentioned in OED] is from Dutch nestig "dirty," literally "like a bird's nest."
From c. 1600 as "indecent, obscene" ("morally filthy"). Of weather, "foul, stormy," from 1630s; of things generally, "unpleasant, offensive; troublesome, annoying," from 1705. Of people, "ill-tempered, mean," from 1825. The noun meaning "something nasty" is from 1935. Related: Nastily; nastiness.
Nasty, in England frequently meaning ill-tempered or cross-grained (Slang Dictionary, p. 186), and in this sense admitted into good society, denotes in America something disgusting in point of smell, taste, or even moral character, and is not considered a proper word to be used in the presence of ladies. [M. Schele De Vere, "Americanisms," 1872]
"one of a class of celestial bodies which move about the sun in great, elliptical orbits," c. 1200, from Old French comete (12c., Modern French comète), from Latin cometa, from Greek (aster) komētēs, literally "long-haired (star)," from komē "hair of the head" (compare koman "let the hair grow long"), which is of unknown origin. So called from resemblance of a comet's tail to streaming hair.
Visible only when near the sun, they were anciently regarded as omens of ruin, pestilence, and the overthrow of kingdoms. Halley in 1682 established the fact that many were periodic. Comet-wine (1833), that made in any year in which notable comets have been seen, was reputed to have a superior flavor (the original reference is to the Great Comet of 1811). Related: Cometary; cometic; cometical.
Their sudden appearance in the heavens, and the imposing and astonishing aspect which they present, have, even in recent times, inspired alarm and terror. One however—the splendid comet of 1811—escaped somewhat of the general odium; for as it was supposed to be an agent concerned in the remarkably beautiful autumn of that year, and was also associated with the abundant and superior yield of the continental vineyards, the wine of that season was called the comet wine. [The Leisure Hour, April 15, 1852]
Beware of wine named after noted vintages long passed, which is generally a clap-trap, the genuine wines being all before secured for years in private stocks. If "comet wine," or any other noted vintage, be offered, decline it, and nine times out of ten you escape an imposition. [Cyrus Redding, "Every Man His Own Butler," London, 1852]
