superadvenient

from The Collaborative International Dictionary of English v.0.48

Superadvenient \Su`per*ad*ven"ient\, a.
   Coming upon; coming in addition to, or in assistance of,
   something. [R.]
   [1913 Webster]

         He has done bravely by the superadvenient assistance of
         his God.                                 --Dr. H. More.
   [1913 Webster]