[2] Due to the research of Antoine Mostaert,[3] the development of this dialect can be traced back 100 years.
[citation needed] In contrast to the other dialects of Mongolian proper, it retains this distinction in all following syllables including in open word-final syllables, thus resembling the syllable and phoneme structure of Middle Mongolian more than any other Mongolian variety.
Due to their persistent existence as short non-initial phonemes, /u/ and /ʊ/ have regressively assimilated *ø and *o, e.g. *otu > /ʊtʊ/ 'star', *ɡomutal > /ɡʊmʊdal/ 'offence', *tʰøry > /tʰuru/ 'power'.
[7] The verb system is not well researched, but employs a notable innovated suffix, ⟨guːn⟩, that does not seem to adhere to the common division into three Mongolic verb suffix classes.
[8] The lexicon of Ordos is that of a normal Mongolian dialect, with some Tibetan and Chinese loanwords.