intercede - definition and synonyms

verb [intransitive] formal 

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present tense
present participleinterceding
past tenseinterceded
past participleinterceded
  1. to try to persuade someone in authority to help someone else or to change their opinion or decision about them, especially someone who is going to be punished
    intercede with someone (on someone’s behalf):

    Local groups asked the politician to intercede with the government on their behalf.