counterpoise - definition and synonyms

noun [countable]  /ˈkaʊntə(r)ˌpɔɪz/
singularcounterpoise
pluralcounterpoises
  1. 1
    something whose effect is equal and opposite to that of another thing and so prevents it from having too much influence

    The militia could provide the perfect counterpoise to the army in the clockwork of government.