Why would we need a new word for that when we already had the perfectly acceptable grawlix?
I now have the names for my next eight cats.
Or, this could be the new [del]Seven[/del] Eight Dwarves.
A friend and I used to use this word all the time, but as a substitute for “person,” as in, “She’s a very important persiflage.”
Grawlix is something completely different, although it’s a great word in itself. Also from that link:
I published a blog entry about interstices and interstitial things just yesterday morning.
Are we in the Matrix? It need a RAM upgrade.
A great many of my favourites are already listed but here are a few more:
lambent- softly lit. I always thought this was one of those words that sounds exactly like what it is.
slump- geology term for downward intermittent movement of rock debris, usually the consequence of removal of buttressing earth at the foot of a slope of unconsolidated material.
iconoclast- One who attacks and seeks to overthrow traditional or popular ideas or institutions.
I once bought a dictionary of slang.There are probably three pages of synonyms for “intoxicated with alcohol,” of which the first of this particular group is
“woofled”
I’ve also been rather fond of “gubernatorial,” and “diabolical,” although of course, those aren’t so obscure. But I still like them anyway.
Reminds me of tenebrous, dark or poorly lit.
Same with crepuscular, relating to twilight
Hmmm… that sounds like it should mean what happens to muscles when you get old and out of shape*, i.e., your biceps turn to crepe-y skin. Use in a sentence: *“He used to be a body builder, but now he’s all crepuscular.”
*
*Don’t mean to imply that being old inevitably means being out of shape.
For ice there’s sastrugi, although the ridges run perpendicular to the wind direction.
I got to use the word about a week ago, when a client wanted me to create a CG ice surface and after he finished explaining what he had in mind I said: “ah, you want sastrugi!”… maybe he thought I was inviting him for lunch at a trattoria. 
I like my sastrugi with sour cream and red cabbage… 
Really? “Sastruga” was dictionary.com’s word of the day once, last winter, though as noted it ended with an A instead of an I. Maybe that’s the plural…?
Reminds me of another favorite, “angle of repose”; the angle at which you can pile a granular material before it slumps. It’s why you can’t build a sand castle out of dry sand.
Angle of Repose, title of a novel by Wallace Stegner.
Sastruga is the singular.
I picked it up years ago while reading early Antarctic explorer’s accounts, like “The Worst Journey in the World” or “Home of the Blizzard”.
It’s not an actual in-the-dictionary word, but I’ve been loving “shitbird” a lot lately.
I also love “wherewithal,” which basically means everything that is necessary to do something; i.e., I’d revive Chess on Broadway if I had the wherewithal.
Interesting. I have always used it strictly in the “having the mental/attention/energy resources to do something”. As in, “I’d make a margarita but I don’t have the wherewithal.” Never occurred to me to include the limes and tequila.
Reminds me of the nice old-fashioned usage of “altogether”, meaning naked. As in “the goddess Juno in her altogether.” Or “the altogether”, sometimes.
Fun legal word: Usufruct. Having the right to use and enjoy the fruits of another person’s property without destruction or waste of the property. A person with such a right is a usufructuary.
Arquebus - a very early muzzle-loading firearm. Like, 200 years before the Pilgrims.
Cordwainer - a shoemaker.
Vexillology: the study of flags.