1 stealing, purloining, robbing, pilfering, taking, filching, pilferage, theft, robbery, larceny; shoplifting, Colloq pinching, Brit nicking, Slang lifting, swiping, US boosting:
The rip-off of books from the library is a disgrace.
2 swindle, confidence trick, swindling, cheating, cheat, fraud, deception, defrauding, defalcation; embezzlement, Colloq con (job or trick):
A husband-and-wife team are being sought for executing a rip-off of thousands from the Outland Bank using a forged letter of credit
3 overcharging, exploitation, Colloq highway or Chiefly Brit daylight robbery:
It's a rip-off to charge two pounds for something that costs only three pence to make.