impersuadableness

from The Collaborative International Dictionary of English v.0.48

Impersuadable \Im`per*suad"a*ble\, a. [Cf. {Impersuasible}.]
   Not to be persuaded; obstinate; unyielding; impersuasible. --
   {Im`per*suad"a*ble*ness}, n.
   [1913 Webster]