insensateness

from The Collaborative International Dictionary of English v.0.48
Insensate \In*sen"sate\, a. [L. insensatus. See {In-} not, and
   {Sensate}.]
   Wanting sensibility; destitute of sense; stupid; foolish.
   [1913 Webster]

         The silence and the calm
         Of mute, insensate things.               --Wordsworth.
   [1913 Webster]

         The meddling folly or insensate ambition of statesmen.
                                                  --Buckle.
   -- {In*sen"sate*ly}, adv. -- {In*sen"sate*ness}, n.
   [1913 Webster]
    

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