Today's word, but not here

I don't generally like to post words-of-the-day that I already know here, unless they ended up leading me to other related words I didn't know, so I'm not sharing today's here either (okay, ratiocination, to keep from having to click through). But took me a moment to realize that it wasn't a repeat.  I recognized it right away from just a couple years ago, when it was listed as a trending word on M-W's site because of a couple of reviewers who used it to describe the then newly-released Sherlock Holmes movie with Robert Downey Jr. (which is probably the iteration of Holmes which relies on the process the least.)