Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "truth-teller" in a sentence
"And truth-teller, let's take a long look at the Party of No you support ..."
"This way, your little angel doesn't end up being the snarky truth-teller of second grade."
"And if one has been wounded, the way Ms. Judd was badly wounded as a child, one will, in adulthood, once one has found one's voice, become a drum major for justice, a truth-teller."