posterity posterity /pɑːˈstɛrəti/

noun

1. All future generations  ( posterity )
   all future generations
   
2. All of the offspring of a given progenitor  ( posterity , descendants )
   all of the offspring of a given progenitor
    We must secure the benefits of freedom for ourselves and our posterity
   we must secure the benefits of freedom for ourselves and our posterity