institutive (??nst??tju?t?v) adj1. concerned with instituting and establishing2. established by custom or law ?insti?tutively advCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014