List of unmistaken synonyms and unmistaken related words.
actual, ascertained, attested, authenticated, categorically true, certain, certified, confirmed, corroborated, demonstrated, determined, documentary, effectual, established, factual, historical, not in error, objectively true, proved, real, substantiated, sure-enough, true, true as gospel, truthful, unconfuted, undenied, undoubted, unerroneous, unfallacious, unfalse, unquestionable, unrefuted, validated, veracious, verified, veritable