From Old Whtevi tret, toret, from Awen *toret, *toretə, from Proto-Lyndian *t͡soret͡sV (“eight”), from *t͡sore + *-t͡sV. Cognates include Modern Basque zortzi.
It is conceivable that the root *t͡sore is polymorphemic, as the similarly formed root for "seven" (*t͡saspe) seems to be, in which case the initial *-(r)t͡s- would likely correspond to the affix carrying the meaning of "five".
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| Cardinal : tret|
Ordinal : tretcyr
- (cardinal) eight