responsiveness

from WordNet (r) 3.0 (2006)

responsiveness
    n 1: responsive to stimulation [syn: {responsiveness},
         {reactivity}]
    2: the quality of being responsive; reacting quickly; as a
       quality of people, it involves responding with emotion to
       people and events [ant: {deadness}, {unresponsiveness}]

from The Collaborative International Dictionary of English v.0.48

Responsive \Re*spon"sive\ (-s?v), a. [Cf. F. resposif.]
   1. That responds; ready or inclined to respond.
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   2. Suited to something else; correspondent.
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            The vocal lay responsive to the strings. --Pope.
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   3. Responsible. [Obs.] --Jer. Taylor.
      [1913 Webster] -- {Re*spon"sive*ly}, adv. --
      {Re*spon"sive*ness}, n.
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