veracity

Short definition from Wiktionary

Noun

1. 1
   The quality of speaking or stating the truth; truthfulness.
2. 2
   Something that is true; a truthful statement; a truth.
3. 3
   Agreement with the facts; accordance with the truth; accuracy or precision.
4. 4
   Act of being exact and accurate.
5. 5
   Correctness and carefulness in one's plan of action.