promissive
promissive
(prəˈmɪsɪv)adj
1. implying promise
2. (Grammar) grammar describing a verbal indication of promise (e.g. will do)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014