Source : Webster's Revised Unabridged Dictionary (1913)

Directness \Di*rect"ness\, n.
   The quality of being direct; straightness;
   straightforwardness; immediateness.

Source : WordNet®

directness
     n : trueness of course toward a goal; "rivaling a hawk in
         directness of aim" [syn: {straightness}] [ant: {indirectness}]