The Collaborative International Dictionary of English v.0.48:

Immorigerous \Im`mo*rig"er*ous\, a. [Pref. im- not +
   morigerous.]
   Rude; uncivil; disobedient. [Obs.] --
   Im`mo*rig"er*ous*ness, n. [Obs.] --Jer. Taylor.
   [1913 Webster]