@tendertouch
I might use haboob if the occasion arose.
Yeah, it's got a good, strong regional flavor. In the right story, it'd be great for establishing setting. I doubt I'll ever use it, because I doubt I'd ever write that story.
I seem to recall dotB using "chinook" in one or two of his stories, and neatly establishing not only what it meant, but, more importantly, what it meant for the characters. It grounded the story solidly in its Canadian Rockies setting.
I'm with BlackKnight, I won't artificially limit my vocabulary (I had to look up tenebrous - not sure if I'll ever use it, though.) As a result I don't get asked to put together presentations at work :)
It's not a word I use very often, either, but the chapter's subject matter is such that more common synonyms for "dark" or "shadowy" were getting kind of worn thin, and "tenebrous" had a good feel for the context where I used it. I'm just working on getting out of this chapter before I have to bust out "chiaroscuro".
I'm OK with authors who choose not to use multi-dollar words as long as the writing doesn't start to feel terse or choppy (not a Hemingway fan for that reason.)
I have never understood people's fascination with Hemingway. Actually, that goes for pretty much all of the authors they forced us to read in high school English class. Mark Twain, George Orwell, and William Shakespeare are, I think, the only ones of the lot that I've ever willingly read any other works by. But The Old Man and the Sea was one I particularly recall hating.