Dictionary.com's Word of the Year is...
That which is *compellingly* the correct or appropriate thing to use, do, say, etc. Always capitalised, always emphasised in speech as though capitalised. Use of this term often implies that in fact reasonable people may disagree. "What's the Right Thing for Lisp to do when it sees "(mod a 0)"? Should it return "a", or give a divide-by-0 error?"
Opposite: Wrong Thing.