overrule - definition and synonyms

verb [transitive] 

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/ˌəʊvəˈruːl/
present tense
I/you/we/theyoverrule
he/she/itoverrules
present participleoverruling
past tenseoverruled
past participleoverruled
  1. to officially change a decision that someone else has made

    Orders given even by the most senior military commanders could be overruled by the President.