A word for “ocean” (PE17/27), “great sea” (PM/363) or “great ocean” (RGEO/64) variously attested as gae(a)ron (PE17/027; PE17/149; PM/363) or aearon (RGEO/65), and a combination of gaear or aear “sea” with the augmentative suffix -on (PE17/27, RGEO/65). Since I prefer gaear for sea; I also prefer gaearon or gaeron for “ocean”. Of these, I think gaeron is the ordinary form, and gaearon is more archaic or poetic.
Sindarin
ron
verb. smooth by polishing
ron
adjective. smoothed by polishing
gaearon
noun. ocean, (lit.) great sea
rong
adverb. soon
-(r)on
suffix. agental suffix
A (masculine) agental suffix appearing as either -on or -ron. The -on variant is derived from ancient ✶-on(do), as seen in [N.] callon “hero” < ᴹ✶kalrondō (Ety/KAL). The -ron variant arose from the addition of ✶-on(do) to the ancient agental suffix ✶-ro after vowel losses made that suffix indistinct. This can be seen most clearly in [N.] thavron “carpenter” < [ON.] sthabro(ndo) < ᴹ✶stabrō (Ety/STAB). Other times the reduced -r became syllabic -or, as in [N.] tavor “woodpecker, [lit.] knocker” < tafr [tavr] < ᴹ✶tamrō (Ety/TAM).
Sometimes the suffix -(r)on was specifically masculine, as in Ellon vs. Elleth “Elf (m./f.)” and [N.] odhron vs. odhril “parent (m./f.)” (WJ/363; Ety/ONO). Other times it seems to be more neutral in meaning, as in pethron “speaker” or mellon “friend” (PE18/100). As a suffix in names, -on is only masculine.
Conceptual Development: The suffix G. -(r)on dates all the way back to the Gnomish Lexicon of the 1910s, but in Early Noldorin Word lists of the 1920s, it usually appeared as ᴱN. -ion.
rû²
adverb. soon, anon
v. smooth by polishing. Q. runda smooth, polish. RUN << RON.. This gloss was rejected.