Two common words used to make one of Bilbo’s hobbit-experience-specific words!  This hyphenated form is attested in the 1800s in the OED, so it’s not a JRRT original.

• 02.036 a reddish comfortable-looking light,

“comfortable, adj. and n.” OED Online. Oxford University Press, June 2017. Web. 7 September 2017.