Source : Webster's Revised Unabridged Dictionary (1913)

Frankness \Frank"ness\, n.
   The quality of being frank; candor; openess; ingenuousness;
   fairness; liberality.

Source : WordNet®

frankness
     n 1: the quality of being honest and straightforward in attitude
          and speech [syn: {candor}, {candour}, {candidness}, {forthrightness}]
     2: the trait of being blunt and outspoken [syn: {outspokenness}]