Search Result for "truthfulness": 
Wordnet 3.0

NOUN (1)

1. the quality of being truthful; 



The Collaborative International Dictionary of English v.0.48:

Truthful \Truth"ful\, a.
   Full of truth; veracious; reliable. -- Truth"ful*ly, adv.
   -- Truth"ful*ness, n.
   [1913 Webster]


WordNet (r) 3.0 (2006):

truthfulness
    n 1: the quality of being truthful [ant: untruthfulness]