Definition of rumbustiousness in English:

rumbustiousness

noun

British
informal
  • See rumbustious

    • ‘The team is special one, one whose mixture of defensive brilliance and inspired rumbustiousness means that they are burnished on the memories of all early converts to the sport.’
    • ‘They are blessed with a vivacity and rumbustiousness that eclipses the lives of those around them.’
    • ‘Despite the outward rumbustiousness of several of his large-scale works, there was a profoundly reflective side to Bliss, partly deepened by the war, partly inbuilt.’