Vowels There were five
vowels: /i, e, a, o, u/. • /i/: • /e/: , ? • /a/: • /o/: , ? • /u/: Syllable-initially, /e/ and /o/ were realized with
semivowels and , respectively, a result of earlier mergers inherited from Early Middle Japanese. According to Nakata (1972), it is unclear how they were realized when they were preceded by a consonant. Frellesvig (2010) argues that consonants were always palatalized before /i, e/, as in Early Middle Japanese. and . The vowel sequence /au/ contracted into , and /ou/ and /eu/ contracted into and , respectively: • /ɸayaku/ (
historical orthography: はやう) "quickly": > > ; • /omoɸu/ (historical orthography: おもふ) "think": > > ; • /keɸu/ (historical orthography: けふ) "today": > > .
Consonants Late Middle Japanese had the following
consonants: In addition were two
phonemes: /N/ and /Q/. "Before a pause, /N/ is a uvular ; it assimilates to the place of articulation of a following stop, affricate, or nasal." "/Q/ becomes a phonetic copy of a following obstruent." • /s, z/, /t, d/, /n/, /h, b/, /p/, /m/, and /r/ could be palatalized.
Labialized consonants /kw, gw/ appeared during Early Middle Japanese. Labialized consonants before -i and -e merged with their non-labial counterparts. Specifically: • /kwi/ > /ki/ • /gwi/ > /gi/ • /kwe/ > /ke/ • /gwe/ > /ge/ The distinction between /ka/ and /kwa/ remained. The
sibilants /s, z/ were
palatalized before /i/ and /e/ and had the following distribution: • /sa, za/: • /si, zi/: • /su, zu/: • /se, ze/: • /so, zo/:
João Rodrigues noted in
Arte da Lingoa de Iapam that the eastern dialects were known for realizing /se/ as , rather than . Note that /se, ze/ has become in Modern Japanese but retained for /si, zi/. /t/ and /d/ were distinguished from the sibilants in all positions but undergo
affrication before /i, u/: • /ti, di/: • /tu, du/:
Prenasalization Voiced stops and
fricatives were
prenasalized: • /g/: • /z/: • /d/: • /b/: João Rodrigues made that observation in
Arte da Lingoa de Iapam. In addition, the Korean text ''
Ch'ŏphae sinŏ'' "spelled [...] b, d, z, g with the
Hangul letter sequences -mp-, -nt-, -nz-, -ngk-", Medial /ɸ/ became before /a/. Before all other vowels, it became silent: • /-ɸa/: , e.g. "river" /kaɸa/ (かは) [kaɸa] > [kawa] • /-ɸi/: , e.g. "new bride" /niɸiduma/ (にひづま) [niɸidzuma] > [ni:dzuma]; "drunkenness" /jeɸi/ (ゑひ) [jeɸi] > [jei] (> obsolete reading [ei]) ~ /joɸi/ (よひ) [joɸi] > [joi] (> modern reading [joi]). • /-ɸu/: , e.g. "to chase" /oɸu/ (おふ) [woɸu] > [wou] • /-ɸe/: , e.g. "house" /iɸe/ (いへ) [iɸe] > [ije] • /-ɸo/: , e.g. "somewhere faraway" /toɸoku/ (とほく) [toɸoku] > [towoku]
Glides /w/ had the following distribution: • /wa/: • /wi/: • /we/: • /wo/: The prior merger between /o/ and /wo/ into during Early Middle Japanese continued into Late Middle Japanese, with /e/ and /we/ merging into by the 12th century. /j/ had the following distribution: • /ja/: • /ju/: • /je/: • /jo/: Various mergers, /e/, /we/ and /je/ made all realized as and thus indistinguishable.
Syllable structure Traditionally,
syllables were of (C)V structure and so there was no need to distinguish between syllables and
morae. However,
Chinese loanwords introduced a new type of sound that could end in -m, -n, or -t. That structure is the syllable (C)V(C). The mora is based on the traditional (C)V structure. The final syllables -m and -n were initially distinguished; but by the end of the Early period, both had merged into /N/.
Medial gemination The final syllables -m, -n, -t before a vowel or a
glide underwent
gemination and became the consonant clusters -mm-, -nn-, and -tt-. and their exact causes are still debated. They also appear in earlier stages of the language but were particularly prevalent throughout Late Middle Japanese and had a great effect on its verbal and adjectival morphology. Verbs: •
yom- "read": /jomite/ > /joNde/ •
kuh- "eat": /kuɸite/ > /kuute/ :: /kuQte/ The
kuh- example had two possible outcomes. The former was particular of the western dialects, and the latter was particular of the eastern dialects. Adjectives: • /ɸajaku/ "quickly" > /ɸajau/: [ɸajaku] > [ɸajau] > [ɸajɔː] • /kataki/ "hard" > /katai/ In both words, the medial
velar -k- became silent by
elision. ==Morphology==