lev·el·er (US) or chiefly Brit lev·el·ler 
/ˈlɛvəlɚ/ noun
plural lev·el·ers /ˈlɛvəlɚ/ noun [count] : something that treats or affects all people the same way
▪ Death is the great leveler. [=death is the same for all people no matter how rich or powerful they may be]
▪ Death is the great leveler. [=death is the same for all people no matter how rich or powerful they may be]
