abruptness

from WordNet (r) 3.0 (2006)

abruptness
    n 1: an abrupt discourteous manner [syn: {abruptness},
         {brusqueness}, {curtness}, {gruffness}, {shortness}]
    2: the property possessed by a slope that is very steep [syn:
       {abruptness}, {precipitousness}, {steepness}] [ant:
       {gentleness}, {gradualness}]
    3: the quality of happening with headlong haste or without
       warning [syn: {abruptness}, {precipitateness},
       {precipitousness}, {precipitance}, {precipitancy},
       {suddenness}]

from The Collaborative International Dictionary of English v.0.48

Abruptness \Ab*rupt"ness\, n.
   1. The state of being abrupt or broken; craggedness;
      ruggedness; steepness.
      [1913 Webster]

   2. Suddenness; unceremonious haste or vehemence; as,
      abruptness of style or manner.
      [1913 Webster]