Irish fás

← Proto-Celtic *wāstos (link)

← Irish breisiú (link)

← Irish forás (link)

← Proto-Indo-European *h₁weh₂-sto- (link)

← Proto-Indo-European *h₁weh₂- (link)

← Old Irish ásaid (inherited)

← Old Irish áss (mention)

← Old Irish fás (inherited)

→ Irish athfhás (prefix)

→ Irish fásmhar (affix)

→ Galician devasa (cognate)