foederati

Noun

foederatus (plural foederati)

1. A confederate. One of the tribes bound by treaty, who were neither Roman colonies nor had they been granted Roman citizenship but were expected to provide a contingent of fighting men when trouble arose.
   • In the middle stage, the Reges Gothorum saw themselves as something better than mere foederati.2011, Norman Davies, Vanished Kingdoms, Penguin, published 2012, page 23