▪ tamper with (a racehorse or greyhound) to prevent it from winning a race, especially by giving it a drug: "a doping ring nobbled three of the trainer's horses in 1990"Similardrugdopetamper withinterfere withdisableincapacitateweaken
2. obtain dishonestly; steal: "he intended to nobble Rose's money"Similarstealthieverobembezzle