Proto-Argyrian language

The Proto-Argyrian language is the unattested common ancestor of all the Argyrian languages. The language was never attested, all its speakers lived in an era where writing wasn't present. Even the location of the Proto-Argyrians is disputed, but is assumed to be at a location East of the Torgyrian Desert.

Consonants

 * Out of the coronal consonants, were fronted denti-alveolar, while  were retracted apico-alveolar.
 * The dorsal nasals were not separate phonemes, but rather allophones of  before dorsal plosives.
 * was the allophone of before
 * was the allophone of before
 * was the allophone of before

Monophthongs
The Proto-Argyrian had an X-shaped five-vowel system consisting of the vowels.

Diphthongs
With the exception of the two illegal combinations, and, any of the five vowels  could have been combined with the two semivowels , which yielded 8 diphthongs in total:  or.

Grammar
Proto-Argyrian was an SVO synthetic language.

Potential relationship to Torgyrian
The Proto-Argyrian and Proto-Torgyrian languages had a large number of similarities both in grammar and phonology, and also happened to be in close contact with each other in antiquity. Because their core vocabularies differ from each other (and because they were spoken by different races), it is usually assumed that the two languages weren't genetically related, but merely shared a Sprachbund that led to the two mutually influencing each other (or they were both influenced by a third language that has since been forgotten by history).

Similarities include:
 * Both were synthetic (Torgyrian being agglutinative)
 * Conjugations of nouns, adjectives, adverbs and verbs
 * Masculine accusative nouns ended with a mid-vowel and a sibilant fricative in both language, in Proto-Argyrian,  or  in Proto-Torgyrian.
 * Lack of perfect verbs, verb tenses being exclusively simple (present simple, past simple, future simple - no present perfect, past perfect, future perfect).
 * Three-way distinction between unvoiced aspirated stops, unvoiced unaspirated stops and voiced stops
 * Three-way distinction between palato-velar, plain velar and labio-velar  stops.
 * Technically this wasn't a feature of Proto-Torgyrian itself, but appeared in Proto-Elven from the coalessence of clusters, which did in fact exist in Proto-Torgyrian.
 * Lack of non-sibilant fricatives
 * Three vowel heights: open, mid, close.
 * In Proto-Argyrian, being open,  being mid,  being close
 * In Proto-Torgyrian, being open,  being mid,  being close
 * Lack of vowel-length distinction
 * The fact that vowels could form diphthongs with any semivowel, except their own semivocalic equivalent (in other words: the fact that with the exception of and, all vowel + semivowel combinations were valid diphthongs).
 * While not concerning the proto-languages themselves, both the Argyrian and Torgyrian language families show a strong tendency towards evolving away from synthesis and moving towards analyticity. An extreme example for this is the Limjiang languages (Shár and Sak), which lean towards being isolating.

However, aside from the completely different core vocabularies (which disproves any theory of the two languages being genetically related), there were some notable differences too:
 * Proto-Torgyrian had vowel-harmony, grouping vowels into two groups: front and back . Each conjugation had to conform to the last syllable of the word it was conjugating in this regard. In Proto-Argyrian, there was no such thing, and subsequent daughter-languages did not evolve such thing.
 * Proto-Torgyrian had four sibilant fricatives, while Proto-Argyrian had only.