Source : Webster's Revised Unabridged Dictionary (1913)

Shapeless \Shape"less\, a.
   Destitute of shape or regular form; wanting symmetry of
   dimensions; misshapen; -- opposed to {shapely}. --
   {Shape"less*ness}, n.

         The shapeless rock, or hanging precipice. --Pope.

Source : WordNet®

shapelessness
     n 1: an amorphous or indefinite shape; "a shapeless mass"
     2: the quality of lacking an esthetically pleasing shape