Reconstruction:Proto-Celtic/towto-

This Proto-Celtic entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.

Proto-Celtic

Etymology

Possibly from Proto-Indo-European *tewH- (“to look favorably, protect, observe”), see also Gothic 𐌸𐌹𐌿𐌸 (þiuþ, “good thing”), Latin tueor (“I gaze”), Proto-Germanic *þiudijaz (“kind, good, friendly”).

The reason for the diverged meaning in Brythonic of "good, favorable" from "left, north" in Gaelic is unclear; possibly due to some sort of taboo replacement.

Adjective

*towto-

1. left, north

Inflection

O/ā-stem
masculine	singular	dual	plural
nominative	*towtos	*towtou	*towtoi
vocative	*towte	*towtou	*towtoi
accusative	*towtom	*towtou	*towtoms
genitive	*towtī	*towtous	*towtom
dative	*towtūi	*towtobom	*towtobos
instrumental	*towtū	*towtobim	*towtobis
feminine	singular	dual	plural
nominative	*towtā	*towtai	*towtās
vocative	*towtā	*towtai	*towtās
accusative	*towtam	*towtai	*towtams
genitive	*towtās	*towtous	*towtom
dative	*towtai	*towtābom	*towtābos
instrumental	*?	*towtābim	*towtābis
neuter	singular	dual	plural
nominative	*towtom	*towtou	*towtā
vocative	*towtom	*towtou	*towtā
accusative	*towtom	*towtou	*towtā
genitive	*towtī	*towtous	*towtom
dative	*towtūi	*towtobom	*towtobos
instrumental	*towtū	*towtobim	*towtobis

Descendants

• Proto-Brythonic:
  • Old Breton: tut (“favorable, good”), tuthe (“kind of demon”) (possibly)
• Old Irish: túaid
  • Irish: thuaidh
  • Manx: twoaie
  • Scottish Gaelic: tuath