Definition of mandative in US English:

mandative

adjective

  • 1Commanding, authoritative.

  • 2Grammar. Conveying a command; specifically designating a subjunctive used in a subordinate clause (usually introduced by that) following an expression of command, suggestion, or possibility.

Origin

Late 16th century; earliest use found in Barnabe Googe (1540–1594), poet and translator. From post-classical Latin mandativus from classical Latin mandāt-, past participial stem of mandāre + -īvus.