Comparative evidence

u̯ert

• Lat. uertō -ere ‘turn’, ‘spin’, ‘bring round’, ‘turn upside down’, ‘invert’, ‘reverse’, ‘retreat’ , ‘divert’, ‘transfer’, ‘replace’, ‘translate’. Forms: uor- the regular form till about the middle of the second cent. B.C. (cf. Quint. Inst. I. 7. 25), and used later by archaizing writers (c.g. Sal., Apul.) (OLD: 2042-2045)