Believe it or not, sometimes I get a bit focused on doing a thing thoroughly. I looked at the list after removing The Twenty Thousand – several hundred words. The Thirty Thousand? Several hundred words. I realized I was going to take this right to the end. The Project Gutenberg word frequency lists are not lemmatized, so I am sanguine about using right up to word 100,000 in my stopwords file.
That word is “Apennine”, by the way. The last improper English word is “withes”, the plural of “withe”:
a. A band, tie, or shackle consisting of a tough flexible twig or branch, or of several twisted together; such a twig or branch, as of willow or osier, used for binding or tying, and sometimes for plaiting.
We get “Withywindle” from this word and it is etymologically related to “willow”. Yes, indeed. Word 99,996 is used in Tolkien’s corpus.
When The Hundred Thousand are eliminated from the text of The Hobbit, ninety words remain. The Project Gutenberg words were not lemmatized, so I first went back and checked for the original forms of the words in the text. In a handful of cases my headword (like “rune”) is not in The Hundred Thousand, but the form in the text (“runes”) is. Those words are not among these ninety.
adjoin attercop baa bannock bash bebother beeswax befoul belch benight bewuther boatload bottommost burgle buttertub carrock coalmining cockscomb confusticate crunchable daylong draggle drat firework fizzle flummox fluster foreleg frizzle gammer glede goggle greybeard guardroom haymaking hmmm hobbit homecoming hotfoot jibber kindhearted laburnum lazybone lunchtime manflesh moneybags ninepins nosebag oddment ogres orc parch pinewoods pitter plop plump plunk poach poof porthole quoits rockhewn rockrose roundshield ruddy rune scone scrabble scrumptious shoreland skrike slither slowcoach smithereens snapdragon snivel snuffle spearman summertime thrum tomnoddy undercut underparts upkeep uptake waterlog whizz wobble yammer zig-zag
Words beyond The Hundred Thousand have earned the “100K” tag.
“withe | with, n.” OED Online. Oxford University Press, March 2015. Web. 30 May 2015.