mandativus

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

mandātīvus, a, um, adj. [1. mando],

of or belonging to a charge or command, mandative : modus, a name given by some grammarians to the future used imperatively (e. g. leges for lege), Diom. p. 330 P.