imaginableness

from The Collaborative International Dictionary of English v.0.48

Imaginable \Im*ag"i*na*ble\, a. [L. imaginabilis: cf. F.
   imaginable.]
   Capable of being imagined; conceivable.
   [1913 Webster]

         Men sunk into the greatest darkness imaginable.
                                                  --Tillotson.
   -- {Im*ag"i*na*ble*ness}, n. -- {Im*ag"i*na*bly}, adv.
   [1913 Webster]