The Collaborative International Dictionary of English v.0.48:

Insensuous \In*sen"su*ous\, a. [Pref. in- not + sensuous.]
   Not sensuous; not pertaining to, affecting, or addressing,
   the senses.
   [1913 Webster]

         That intermediate door
         Betwixt the different planes of sensuous form
         And form insensuous.                     --Mrs.
                                                  Browning.
   [1913 Webster]