FromProto-Indo-European*só, with the stem*t- extended analogically to the whole paradigm.
*tas[1][2]
- that
Unaccented; feminine and neuter respectively*tāˀ and*ta.
- Proto-Baltic: *tas
- East Baltic:
- West Baltic:
- Old Prussian:stas(with unclears- prefix)
- →? Proto-Finnic:*taa (see there for further descendants)
- Proto-Slavic:*tъ (see there for further descendants)
- ^Derksen, Rick (2008), “*tъ”, inEtymological Dictionary of the Slavic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series; 4), Leiden; Boston: Brill,→ISBN,page502: “*tos”
- ^Derksen, Rick (2015), “tas”, inEtymological Dictionary of the Baltic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series;13), Leiden, Boston: Brill,→ISBN,page459: “*tos”
