Umbrian

Noun

utur

1. Alternative form of 𐌖𐌕𐌖𐌓 ‎(utur, “water”)

References

• Fortson, Benjamin W. (2010) Indo-European Language and Culture: An Introduction, second edition, Oxford: Blackwell, page 281, All the PIE nominal stem-classes are preserved in Italic, including even traces of the archaic r/n-stems (§6.31), as in Lat. femur 'thigh', stem femin-, and Umbrian utur 'water', stem un- (< *utn-).
• James Clackson, Indo-European Linguistics: An Introduction, page 34: 'water' ... Umbrian utur