-ы

From Proto-Mordvinic *-i-j(a), inherited from Proto-Uralic *-ja (present participle ending). Compare -я (-ja) in Erzya содыя (sodïja, “I found out [it]”), -й (-j) in кельсодый (keľsodïj, “linguist”). Related to Finnish -ja, Estonian -ja, Livonian -ji, e.g., jūoji (“drinker”).

See also Moksha -ай (-aj).

-ы • (-ï)

1. agentive suffix
   • V. I. Ščankina (2011) Russko-mokšansko-erzjanskij slovarʹ [Russian-Moksha-Erzya Dictionary], Saransk, →ISBN

     ваны, аралай (наблюдатель)

     van ï , aralaj (nabľudateľ)

     observer (observer [in Russian])

From Classical Mongolian ᠢ (-i) and ᠠᠢ (-ai).

• IPA^(key): /ˈi/
• Syllabification: ы (1 syllable)

-ы • (-y)

1. Marks the genitive case in the regular declension after a back vowel stem ending in н (n).

   ‎чидун (čidun, “olive tree”) + ‎-ы (-y) → ‎чидуны (čiduny, “olive tree's”)

2. Forms patronymics.

• -ын (-yn), -ийн (-iin), -ий (-ii), -н (-n), -ны (-ny), -ний (-nii), -ины (-iny), -иний (-inii), -гийн (-giin)