- 12.094 not far down from the half-open door
“Half-” as a combining for is combined with “open” in the OED.
“half-, comb. form.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/83403. Accessed 14 September 2017.
hyphen
Half-imagined
- 05.009 or half-imagined dark things coming out of them.
Although many things combine with “half-” in the OED, this one is not found there. It’s not unique to Tolkien, but we are using the JRRT tag to include those words that he may not have invented, but certainly used and which are not dictionary-supported.
Half-finished
- 02.019 leaving his second breakfast half-finished
“Half-” as a combining form with nouns and adjectives has its very own OED entry, which includes “half-finished”.
“half-, comb. form.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/83403. Accessed 14 September 2017.
Guard-chamber
- 15.010 that lived here above the guard-chamber.
A properly attested word in the OED.
“guard, n.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/82132. Accessed 13 September 2017.
Grown-up
- 08.092 and even grown-up he had still spent a deal of his time at quoits,
A proper compound word.
“grown-up, adj. and n.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/81922. Accessed 13 September 2017.
Grand-uncle
Of any generation! In fact, these two references are both to Bullroarer Took, once as Old Took’s g-g-uncle and once as Bilbo’s g-g-g-g-uncle. I have chosen to make these one entry, but let the debate rage on! Neither form, nor great-uncle, nor grand-uncle, appear in the Project Gutenberg 100K most common words.
“Grand-uncle” is apparently more common in Ireland than “great-uncle” which is elsewhere the more popular form.
- 01.094 even to Old Took’s great-grand-uncle Bullroarer,
- 01.097 I had a great-great-great-grand-uncle once,
“grand-uncle, n.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/80718. Accessed 13 September 2017.
Grassy-floored
- 11.014 grassy-floored, still and quiet.
Not found in OED.
Grass-land
- 07.010 to the grass-land beyond the stream.
Rarely hyphenated, but attested in OED.
“grass land | grassland, n.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/80907. Accessed 13 September 2017.
Grass-green
- 03.007 and slashes of grass-green
Found in OED.
“grass-green, adj. (and n.).” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/80900. Accessed 13 September 2017.
Good-night
- 09.022 bidding the chief of the guards good-night.
No space in the OED entry, but hyphen found in the examples.
“goodnight, n., int., and adj.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/79974. Accessed 13 September 2017.
words that you were saying 