1. truthiness (noun)1 : "truth that comes from the gut, not books" (Stephen Colbert, Comedy Central's "The Colbert Report," October 2005)
2 : "the quality of preferring concepts or facts one wishes to be true, rather than concepts or facts known to be true" (American Dialect Society, January 2006)
I'd not heard of it before but rather like it. In fact, I've decided to adopt it. At the moment I'm quite interested in the fuzzy, fudgy boundaries between objective and subjective truth, reality and unreality, fact and fiction. Truthiness sounds light, happy and playful, it just feels like the right term for describing a whole load of stuff to do with half-truths, almost-truths and those things we wilfully prefer to think of as truths.