In the published material, Tolkien described Ilkorin historical phonology in two places: the Comparative Tables from the 1930s (PE19/18-28) and in some notes within the second version of Tengwesta Qenderinwa from around 1950 (TQ2, PE18/71-107). In the second work, Tolkien referred to Ilkorin as “Beleriandic” or “Sindarin”, since
he was in the middle of transitioning from the Noldorin of 1930s and 1940s to the Sindarin of the 1950s and later. Shortly
after TQ2 was written, he abandoned the Ilkorin language entirely, since he reconceived the native language of the Elves of
Beleriand as Sindarin.
Both of these discussions described only some of the phonetic developments of Ilkorin: mostly sounds in isolation, independent
of context except for their position in the word (initial, medial or final), as well as a couple of other specialized cases.
Additional rules can be deduced by examining the phonetic developments in The Etymologies of the 1930s (LR/341-400), which are largely but not completely compatible with the changes described in the Comparative Tables.
For my analysis of the phonology of Ilkorin and Doriathrin, I frequently consulted Helge Fauskanger’s work on these languages
from his Ardalambion web site (AL-Ilkorin, AL-Doriathrin). Most of the Ilkorin phonetic rules in this lexicon agreed with Mr. Fauskanger’s analysis, but his work predates the publication
of the Comparative Tables and TQ2. There are few cases where I was able to describe certain sound changes in more detail because I had access to more
information, but in almost all cases I found Mr. Fauskanger’s analysis remains valid.
long final vowels were shortened |
[-SV̄] |
> |
[-SV̆] |
00100 |
[j] was lost after initial [s] |
[sj-] |
> |
[s-] |
00200 |
unstressed initial syllables reduced to favored clusters |
[{bdgmt}ˌV₁rV₁-] |
> |
[{bdgmt}rV₁-] |
00300 |
initial [mr-] became [br-] |
[mr-] |
> |
[br-] |
00400 |
voiceless stops were voiced before nasals |
[{ptk}{mn}] |
> |
[{bdg}{mn}] |
00500 |
medial voiceless stops were voiced after nasals |
[mp|nt|ŋk] |
> |
[mb|nd|ŋg] |
00600 |
[ō] became [ū] before [m] |
[ōm] |
> |
[ūm] |
00700 |
[ŋ] became [ɣ] between vowels and before [l], [r] |
[VŋV|ŋ{lr}] |
> |
[VɣV|ɣ{lr}] |
00800 |
[h] vanished before consonants lengthening the preceding vowel |
[Vh{ptk}] |
> |
[V̄{ptk}] |
00900 |
[ā], [ǭ] became [ō] |
[{āǭ}] |
> |
[ō] |
01000 |
[ǣ] became [ē] |
[ǣ] |
> |
[ē] |
01100 |
[ei], [ou] became [ī], [ū] |
[ei|ou] |
> |
[ī|ū] |
01200 |
[eu], [iu] became [io] |
[eu|iu] |
> |
[io] |
01300 |
[oi] became [ui] |
[oi] |
> |
[ui] |
01400 |
[nm] became [mm] |
[nm] |
> |
[mm] |
01500 |
short [i], [u] became [e], [o] preceding final [a] |
[-{ĭŭ}{C|CC}a] |
> |
[-{eo}{C|CC}a] |
01600 |
[e], [o] became [i], [u] before [nn], [nd], [ŋg] |
[{eo}{nn|nd|ŋg}] |
> |
[{iu}{nn|nd|ŋg}] |
01700 |
second unstressed short vowel of same quality lost |
[V₁CˌV₁C{Vw}] |
> |
[V₁CC{Vw}] |
01800 |
[d] became [ð] after [r] |
[rd] |
> |
[rð] |
01900 |
voiceless stops became spirants after liquids and voiceless stops |
[{lrptk}{ptk}] |
> |
[{lrfθx}{fθx}] |
02000 |
initial [s] became [es] before voiceless stops |
[s{ptk}-] |
> |
[es{ptk}-] |
02100 |
[esk] became [esg] |
[esk] |
> |
[esg] |
02200 |
initial [s] unvoiced following [l], [r], [w] |
[s{lrw}-] |
> |
[ø{l̥r̥w̥}-] |
02300 |
initial [s] spirantalized following voiceless stops |
[s{ptk}-] |
> |
[s{ptk}ʰ-] |
02400 |
initial [s] was lost before consonants |
[sC-] |
> |
[øC-] |
02500 |
medial voiceless stops, nasals and [ɣ] became [s] before [s] |
[{ptknŋɣ}s] |
> |
[ss] |
02600 |
[ls] became [ll] |
[ls] |
> |
[ll] |
02700 |
[sn] became [nn] |
[sn] |
> |
[nn] |
02800 |
initial [ŋ], [ɣ] became [g] |
[{ŋɣ}-] |
> |
[g-] |
02900 |
[ɣ] became [g] before nasals |
[ɣ{mn}] |
> |
[g{mn}] |
03000 |
aspirates became voiceless spirants |
[{ptk}ʰ] |
> |
[{fθh}] |
03100 |
double spirants became single |
[{xθ}θ|xx] |
> |
[θ|x] |
03200 |
[ŋg] vanished before [w] lengthening the preceding vowel |
[-Vŋgw-] |
> |
[-V̄w-] |
03300 |
medial velars with following [j] became dentals |
[-{kj|gj|ŋgj|xj}-] |
> |
[-{t|d|nd|θi}-] |
03400 |
initial palatalized velars became dentals |
[{kkʰgŋ}j-|ŋgj-] |
> |
[{ttʰdn}ø-|nd-] |
03500 |
[j] was lost after initial velars and dentals |
[{kkʰgŋs}j-|ŋgj-|skj-] |
> |
[{kkʰgŋs}ø-|ŋg-|sk-] |
03600 |
medial [j] became [i] |
[-j-] |
> |
[-i-] |
03700 |
short [a], [o] became [e], [u] preceding [i] |
[{ăŏ}{C|CC}i] |
> |
[{eu}{C|CC}i] |
03800 |
initial [w] became [gw] |
[w-] |
> |
[gw-] |
03900 |
initial [kwo], [gwo] became [ko], [go] |
[{kg}wo-] |
> |
[{kg}o-] |
04000 |
initial [j] vanished |
[j-] |
> |
[ø-] |
04100 |
[g] vocalized before [m], [n] |
[Vg{mn}|ug{mn}] |
> |
[Vu{mn}|ui{mn}] |
04200 |
voiced stops spirantalized after vowels |
[V{bdg}] |
> |
[V{vðɣ}] |
04300 |
voiceless stops voiced after vowels |
[V{ptk}] |
> |
[V{bdg}] |
04400 |
[z] became [i] before voiced stops |
[Vz{bdg}] |
> |
[Vi{bdg}] |
04500 |
[w] vanished after medial velars |
[-{kgx}w-|VxwV] |
> |
[-{kgx}-|VhV] |
04600 |
short final vowels vanished |
[-S{ĭĕăŏŭ}|-{gɣ}o] |
> |
[-Sø|-{gɣ}a] |
04700 |
medial voiceless spirants voiced after vowels |
[-V{fθx}-] |
> |
[-V{vðɣ]}-] |
04800 |
initial [x] unvoiced following [l], [r], [w] |
[x{lrw}-] |
> |
[ø{l̥r̥w̥}-] |
04900 |
initial [x-] became [h-] |
[x-] |
> |
[h-] |
05000 |
[o] or [u] usually developed between a consonant and final [l], [r], [n], [m] |
[-Cm|-Cn{lrn}|-rn] |
> |
[-Cum|-Co{lrn}|-rn] |
05100 |
later [ei], [ou] became [ē], [au] |
[ei|ou] |
> |
[ē|au] |
05200 |
final [mb], [mm] became [m] |
[-m{bm}] |
> |
[-m] |
05300 |
[nd] became [ŋg] following a [g] |
[gX₊nd] |
> |
[gX₊ŋg] |
05400 |
final [nd], [ll] became [l], [n] in polysyllables |
[-SS{nd|ll}] |
> |
[-SS{n|l}] |
05500 |
long vowels shortened in final syllables |
[-SV̄C] |
> |
[-SV̆C] |
05600 |
short vowels sometimes lengthened in monosyllables |
[C*V̆C] |
> |
[C*V̄C] |
05700 |
final [j], [w] became [i], [u] |
[-C{jw}] |
> |
[-C{iu}] |
05800 |
[ɣ] vanished |
[ɣ] |
> |
[ø] |
05900 |
final [i], [u] usually became [e], [o] |
[-C{iu}] |
> |
[-C{eo}] |
06000 |
initial nasals usually vanished before stops |
[{mnŋ}{bdg}-] |
> |
[ø{bdg}-] |
06100 |
final [ð] became [θ] |
[-ð] |
> |
[-θ] |
06200 |
[dl] became [gl] |
[dl] |
> |
[gl] |
06300 |
final [un] became [on] |
[-Cun] |
> |
[-Con] |
06400 |
[g] became [i] between an [l] and a vowel |
[lgV] |
> |
[liV] |
06500 |