Synset

conformity to reality or actuality
<noun.state>   freq. cnt.: 7 freq. cnt.: 7

the true

trueness

truth

verity

sample sentences

"they debated the truth of the proposition"
"the situation brought home to us the blunt truth of the military threat"
"he was famous for the truth of his portraits"
"he turned to religion in his search for eternal verities"