institutive

from The Collaborative International Dictionary of English v.0.48

Institutive \In"sti*tu`tive\, a.
   1. Tending or intended to institute; having the power to
      establish. --Barrow.
      [1913 Webster]

   2. Established; depending on, or characterized by,
      institution or order. "Institutive decency." --Milton.
      [1913 Webster]