shakiness

from WordNet (r) 3.0 (2006)

shakiness
    n 1: a shaky motion; "the shaking of his fingers as he lit his
         pipe" [syn: {shaking}, {shakiness}, {trembling}, {quiver},
         {quivering}, {vibration}, {palpitation}]
    2: the quality of being unstable and insecure; "the shakiness of
       the present regime"

from The Collaborative International Dictionary of English v.0.48

Shakiness \Shak"i*ness\, n.
   Quality of being shaky.
   [1913 Webster]