From Wiktionary, the free dictionary
A derivation from Proto-Turkic *soŋ (“end”).
soñra
- then, later
- Mirjejev, V. A., Usejinov, S. M. (2002) Ukrajinsʹko-krymsʹkotatarsʹkyj slovnyk [Ukrainian – Crimean Tatar Dictionary][1], Simferopol: Dolya, →ISBN
- “soñra”, in Luğatçıq (in Russian)