1. the quality of seeming to be true according to one's intuition, opinion, or perception without regard to logic, factual evidence, or the like: the growing trend of truthiness as opposed to truth. (I wonder if this could also be considered alternative facts?)
2. Rare. truthfulness or faithfulness.
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Origin: 1824 for def 2; 2005 for def 1 (coined by Stephen Colbert (1964– ), U.S. comedian and TV host); truth + -y + -ness
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