sponsional

from The Collaborative International Dictionary of English v.0.48

Sponsional \Spon"sion*al\ (-al), a.
   Of or pertaining to a pledge or agreement; responsible. [R.]
   [1913 Webster]

         He is righteous even in that representative and
         sponsional person he put on.             --Abp.
                                                  Leighton.
   [1913 Webster]