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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. |
From Proto-Indo-European *h₃ewp- (“up”).
*(o)uxs-
Irish and Celtiberian reflect the zero-grade of the prefix, while Brittonic reflects a non-zero grade of it.