doctor - definition and synonyms

verb [transitive] 

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present tense
present participledoctoring
past tensedoctored
past participledoctored
  1. 1
    to change something, especially facts or numbers, in order to make people believe something that is not true

    Experts suspected that the company’s report had been doctored.

  2. 2
    to add a substance to food or drink, especially a harmful substance
    doctor something with something:

    There were worries that the horse’s feed had been doctored with drugs.

  3. 3
    informal to remove the sexual organs of an animal so that it cannot produce babies