-ı

From Ottoman Turkish ی‎ (-ï, “accusative case marker”), itself from either Common Turkic *-ɣ, *-ïɣ (“accusative case marker”) or simplified from Common Turkic *-nï (“accusative case marker”) to suit where oblique case is unnecessary for the accusative case, since the oblique case *-n- is not productive by itself and requires other cases, see -nı for examples. Compare Old Turkic 𐰍‎ (-ɣ, -ïɣ), 𐰍𐰃‎ (-ïɣ).

-ı

1. accusative suffix

• It becomes -yı if the word ends with a vowel.

• -i
• -nı

From Ottoman Turkish ی‎ (-ï, “possesive marker”), from Proto-Turkic *-ï (“possesive marker”). Cognate with Old Turkic 𐰃‎ (-ï).

-ı

1. 3rd person singular possessive suffix

• Although it is believed to become -sı when the word ends with a vowel, this suffix probably comes from a different root.

• -i

From Ottoman Turkish ی‎ (-ï, “adverbial suffix”), from Proto-Turkic *-u. Cognate with Old Turkic 𐰆‎ (-u)

-ı

1. (unproductive and limited to certain pattern and copula) Makes adverbs out of verbs

• -i
• -u
• -yı