Comparative evidence

u̯eth₂

• Hitt. uttar 'word', 'speech', 'case', 'thing', story', 'reason' (EDHIL: 932f.)

• CLuv. utar 'word'?, 'spell'? (EDHIL: 932f.). Alternatively, these words are connected with the root *h2wedh- (LIV2: 286).

References

EDHIL = Kloekhorst, A. 2008. Etymological Dictionary of the Hittite Inherited Lexicon. Brill.
LIV2: = Rix, H. et. al. 2001. Lexikon der indogermanischen Verben. 2. Auflage. Reichert.