Spŏn'sion-al, a.
a. Of, or pertaining to, a pledge or agreement; responsible. [Rare.] “He is righteous even in that representative and sponsional person he put on.” Leighton.
a. Of, or pertaining to, a pledge or agreement; responsible. [Rare.] “He is righteous even in that representative and sponsional person he put on.” Leighton.