truthfulness
noun
[ ˈtruːθf(ʊ)lnəs ]
• the fact of being true; truth.
• "we have had to judge the truthfulness of the evidence"
Similar:
honesty,
veracity,
sincerity,
lack of deceit,
trustworthiness,
genuineness,
candour,
candidness,
frankness,
openness,
forthrightness,
truth,