OED gives us neither “autumn-like” nor “autumnlike”, so I will call this a JRRT original. Now, it may not be original to him at all, but a word that he saw in someone else’s uncommon text. We tag it thus to bring it into the light of examination.
A JRRT original word – it is not found in OED as one word, one hyphenated word, or as a two-word word (as “apple tart” is).
This word does not appear in OED.
Hyphenated in OED.
“well-armed, adj.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/227020. Accessed 21 September 2017.
Hyphenated in OED.
“well-behaved, adj. and n.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/227049. Accessed 21 September 2017.
The hyphen is not present in OED variant spellings, but it is in the examples.
“armchair, n. and adj.” OED Online. Oxford University Press, June 2017. Web. 5 September 2017.
Hyphenated in OED.
“well-filled, adj.” OED Online, Oxford University Press, June 2017, http://www.oed.com/view/Entry/227260. Accessed 21 September 2017.
words that you were saying 