Middle Gujarati refers to the stage of the Gujarati language spoken between 1300 AD and 1800. It split off from Old Western Rājasthāni, and developed the phonemes ɛ and ɔ, the auxiliary stem ch-, and the possessive marker -n-. Major phonological changes characteristic of the transition between Old and Middle Gujarati are: i, u develop to ə in open syllables diphthongs əi, əu change to ɛ and ɔ in initial syllables and to e and o elsewhere əũ develops to ɔ̃ in initial syllables and to ű in final syllables
These developments would have grammatical consequences. For example, Old Gujarati's instrumental-locative singular in -i was leveled and eliminated, having become the same as Old Gujarati's nominative/accusative singular in -ə.
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