truthfulness       
noun [ U ] uk/ˈtruːθ.fəl.nəs/ us/ˈtruːθ.fəl.nəs/
 真实,诚实
the quality of being honest and not containing or telling any lies
  I believe I have earned a reputation for truthfulness and fairness. 我相信我已经赢得了诚实和公平的名声。 
 Families began to question the truthfulness of the information they had been given. 这些家庭开始质疑他们所得到的信息的真实性。 
 Synonyms: truthveracity verity 
Opposites: falsehood mendacity 
See: truthful
 - More examples
 - She would not comment on the truthfulness of her original statement.
 - We will analyze the data to determine the truthfulness of their claims.
 - He didn't doubt her truthfulness.