Welsh iâl

← Gaulish Eburo-ialum (cognate)

← Gaulish Verno-ialum (mention)

← Proto-Celtic *yalom (inherited)

← English idle (cognate)

← Proto-Indo-European (inherited)

← Proto-Indo-European *yeh₁- (mention)

← Lithuanian jė̃las (cognate)

← Old Breton Ialonus (cognate)

← Polish jałowy (cognate)

→ English yale (derived)