Frequently compared with its equivalents in other language families of Eurasia, such as Proto-Indo-European *túh₂, Northern Yukaghir тэт (tet), Proto-Mongolic *ci. Most of these comparisons would require an earlier form to be *ti.
The Samic and Mordvinic reflexes suggest a variant *tun, of unclear origin. In some sources, the Samoyedic forms have also been considered to derive from this. However, according to Janhunen (2013), its inflection indicates an earlier front-vocalic form, implying that only a single variant *tinä is to be reconstructed to Proto-Uralic.
*tinä (plural *te)
- Samoyedic: *tən
- Hungarian: te
- Finnic: *cinä (stem *cinu-) (see there for further descendants)
- Samic: *ton (see there for further descendants)
- Janhunen, Juha. 2013. "Personal pronouns in core Altaic". In: Robbeets, Martine; Cuyckens, Hubert (eds.) Shared Grammaticalization. With special focus on the Transeurasian languages. John Benjamins.
- Rédei, Károly (1986–88) Uralisches etymologisches Wörterbuch [Uralic Etymological Dictionary] (in German), Budapest: Akadémiai Kiadó
- Entry #1083 in Uralonet, online Uralic etymological database of the Research Institute for Linguistics, Hungarian Academy of Sciences.