Another Stephen King (pet image, rather than word): when someone is hit by something (train/monster/bullet/bad news/whatever) they always seem to get knocked out of their shoes.
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I was putting together a collection of Lovecraft’s short stories recently, and I was mightily tempted to name it Partly Squamous, Partly Rugose. But I didn’t.
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Others:
Peter David over-uses “happenstance.” And it’s not a word you forget seeing.
For a really silly example of this, see Todd McFarlane’s first Spider-Man issue of about a decade ago and stand in awe at the train-wreck that is ADVANTAGEOUS!
Not quite on-topic, but let me also mention Covenant’s “gaunt, compulsory visage.” I think Donaldson only uses that once, but that’s no respite for those of us whose faces are merely optional…
Oh, Hornswoggler, did your parents decide not to pay extra for the ‘face option’? I always wondered what happened to those kids - did you have to wear a paper bag, or did they give you some kind of leatherette factory-made face, or what?
Another one, only slightly different: E. L. Konigsberg and epiphany. That makes regular appearances in her later books - there are schools named Epiphany, towns named Epiphany, and then there’s also people having epiphanies - and it isn’t like ‘epiphany’ is an every-day, all-day kinda word.
I loved those books, and I noticed that too :). But remember, it was their word for hell :). Except… how was it pronounced? I always said it 'Niff-ul-hime".