overstep - definition and synonyms

verb [transitive] 

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/ˌəʊvə(r)ˈstep/
present tense
I/you/we/theyoverstep
he/she/itoversteps
present participleoverstepping
past tenseoverstepped
past participleoverstepped
  1. to do something that is considered rude or is not allowed
    overstep the bounds/rules/limits of something:

    The committee had overstepped the bounds of its authority.