The Gaulish theonymAndarta is traditionally interpreted as meaning 'Great Bear', perhaps 'powerful bear' or Ursa Major, formed with an intensifying suffix and- attached to a feminine form of artos ('bear').[1][2]Andarta might thus have been a counterpart or an alternative name of the Celtic bear goddess, Artio.[2]
According to linguist Blanca María Prósper, however, "this idea is uncompelling because the semantics lack good parallels and the inner syntax of the compound is utterly problematic." In her view, the name should be translated as 'Well-fixed, Staying-firm', formed with a prefix *h₂ndʰi- (or *h₁ndo-) attached to a participle *-h₂-rtó ('fixed, composed, built'; cf. Sanskrit ṛta 'cosmic law, order', Greek artús 'arrangement', Latin artus 'joint').[3]
Prósper, Blanca María (2018). "The Venetic Inscription from Monte Manicola and Three termini publici from Padua: A Reappraisal". Journal of Indo-European Studies. 46 (1 & 2): 1–61.