volatility

volatility
    n 1: the property of changing readily from a solid or liquid to
         a vapor
    2: the trait of being unpredictably irresolute; "the volatility
       of the market drove many investors away" [syn: {volatility},
       {unpredictability}]
    3: being easily excited [syn: {excitability}, {excitableness},
       {volatility}]
    

Volatileness \Vol"a*tile*ness\, Volatility \Vol`a*til"i*ty\, n.
   [Cf. F. volatilit['e].]
   Quality or state of being volatile; disposition to evaporate;
   changeableness; fickleness.
   [1913 Webster]

   Syn: See {Levity}.
        [1913 Webster]
    

79 Moby Thesaurus words for "volatility":
      airiness, animation, ascent, brainlessness, bubbliness, buoyancy,
      caducity, changeability, changeableness, coquettishness,
      corruptibility, daintiness, death, delicacy, downiness,
      empty-headedness, ephemerality, ephemeralness, ethereality,
      evanescence, evaporability, faddishness, faddism, fickleness,
      finitude, fleetingness, flightiness, flippancy, floatability,
      fluffiness, foaminess, foolishness, frivolity, frivolousness,
      frothiness, fugacity, gentleness, giddiness, gossameriness,
      impermanence, impermanency, inconstancy, instability,
      lack of depth, lack of weight, levitation, levity, lightness,
      mercuriality, mercurialness, momentariness, mortality, mutability,
      perishability, shallow-wittedness, shallowness, skittishness,
      softness, sprightliness, superficiality, tenderness, thinness,
      thoughtlessness, transience, transiency, transientness,
      transitoriness, undependability, unheaviness, unpredictability,
      unprofoundness, unprofundity, unreliability, vaporability,
      vaporizability, variability, weightlessness, witlessness,
      yeastiness