\De*sid"er*a*tive\, a. [L. desiderativus.]
Denoting desire; as, desiderative verbs.

\De*sid"er*a*tive\, n.
1. An object of desire.
2. (Gram.) A verb formed from another verb by a change of
   termination, and expressing the desire of doing that which
   is indicated by the primitive verb.