Copperhead1. (n.) A poisonous American serpent (Ancistrodon conotortrix), closely allied to the rattlesnake, but without rattles; -- called also copper-belly, and red viper.
2. (n.) A nickname applied to a person in the Northern States who sympathized with the South during the Civil War.
Thesaurus Entries
Benedict Arnold, Brutus, Judas, Judas Iscariot, Quisling, adder, anaconda, animal, archtraitor, asp, beast, bend, betrayer, blacksnake, blind snake, boa, boa constrictor, bull snake, bushmaster, cobra, cobra de capello, cockatrice, conniver, conspirator, conspirer, constrictor, contort, copperhead, coral snake, corkscrew, cottonmouth, crawl, creep, crinkle, crook, cur, curve, daboia, diamondback, divagate, dog, double agent, double-crosser, double-dealer, drag, draggle, draw, drift, err, excurse, fer-de-lance, fink, flick, flip, flirt, flounce, garter snake, glide, go adrift, go astray, go on tiptoe, gopher snake, grovel, gumshoe, hale, hamadryad, haul, heave, hitch, hog-nose snake, hook, horned rattlesnake, horned viper, hound, hyena, inch, inch along, informer, insect, intort, intrigant, intriguer, jerk, jig, jigger, jigget, jiggle, jog, joggle, king cobra, king snake, krait, lift, loop, lug, lurk, machinator, mamba, meander, milk snake, moccasin, mongrel, nab, nail, nick, nightwalk, nip, ophidian, pad, pererrate, pig, pinch, pine snake, pit viper, plotter, pluck, polecat, prick, prowl, puff adder, pull, pussyfoot, python, quisling, racer, ramble, rat, rat snake, rattler, rattlesnake, reptile, rove, scallop, schemer, scrabble, scramble, screw, scum, sea snake, serpent, serpentine, shirk, shit, shithead, shovel-nose, sidewinder, sidle, skulk, skunk, slidder, slide, slink, slip, slither, snatch, sneak, snitch, spectacled cobra, steal, steal along, straggle, stray, swine, swipe, swirl, take in tow, thunder snake, timeserver, tippytoe, tiptoe, toad, tow, trail, train, traitor, trawl, treasonist, trimmer, troll, tug, turd, turn, turncoat, tweak, twine, twirl, twist, twist and turn, twitch, undulate, urutu, varmint, vermin, viper, wander, water moccasin, water snake, whelp, whirl, whorl, wind, worm, worm along, worm snake, wrench, wring, yank, yerk, zigzag