promptitude

from WordNet (r) 3.0 (2006)

promptitude
    n 1: the characteristic of doing things without delay [syn:
         {promptness}, {promptitude}]

from The Collaborative International Dictionary of English v.0.48

Promptitude \Prompt"i*tude\, n. [F., fr. L. promptitudo. See
   {Prompt}, a.]
   The quality of being prompt; quickness of decision and action
   when occasion demands; alacrity; as, promptitude in
   obedience.
   [1913 Webster]

         Men of action, of promptitude, and of courage. --I.
                                                  Taylor.
   [1913 Webster]