Gyp

Noun

 * 1) A cheat or swindle; a rip-off.
 * Why do we have to buy this new edition of the textbook when there’s almost no difference between it and the previous one? What a gyp!
 * 1)  A college servant.
 * 2) gypsophila.
 * 3) Pain or discomfort.
 * ''My back's giving me gyp.

Verb

 * 1)  To cheat or swindle someone of something inappropriately.
 * The cab driver gypped me out of ten bucks by taking the longer route.
 * 1)  to play hooky, truant or skive
 * He gypped school today.

Thesaurus
Partlet, Seeing Eye dog, ballot-box stuffing, bandog, beat, beguile of, biddy, bilk, bitch, bossy, bowwow, brood mare, bunco, burn, canine, cardsharping, cheat, cheating, chisel, chouse, chouse out of, cog, cog the dice, con, con man, cow, cozen, cozenage, crib, defraud, defrauder, diddle, diddler, diddling, dishonesty, do, do in, do out of, dodge, doe, dog, double-dealer, euchre, ewe, ewe lamb, fake, fancy dog, filly, finagle, fishy transaction, flam, fleece, flimflam, flimflammer, fob, fraud, fraudulence, fraudulency, fudge, gerrymandering, gouge, graft, grift, guide dog, guinea hen, gull, gyp joint, have, heifer, hen, hind, hoax, hocus, hocus-pocus, humbug, illicit business, imposition, imposture, jenny, kennel, lap dog, lioness, mare, mountebank, mulct, nanny, nanny goat, overreach, pack of dogs, pack the deal, peahen, phony, pigeon, pooch, practice fraud upon, pup, puppy, racket, roe, rook, scam, screw, sell, sell gold bricks, sharper, shave, she-bear, she-goat, she-lion, sheep dog, shortchange, show dog, sled dog, slut, sow, spoof, stack the cards, stick, sting, swindle, take a dive, thimblerig, throw a fight, tigress, toy dog, trickster, victimize, vixen, watchdog, whelp, working dog

Etymology
The various senses may have different etymological origin.

In the sense “swindle”, may have derived from gypsy:, via stereotype of Roma as swindles, although no direct evidence exists. Compare jew:, from Jew:, and welsh:, from Welsh:.