Welsh angen

← Breton anken (cognate)

← Proto-Brythonic *anken (inherited)

← Proto-Celtic *ankenā (inherited)

← Ancient Greek ἀνάγκη (cognate)

← Proto-Indo-European *h₂neḱ- (derived)

← Cornish - (cognate)

← Old Irish éicen (cognate)

← Middle Welsh aghen (inherited)

→ Welsh anghenus (affix)

→ Welsh anghenion (affix)

→ Old Irish éicen (cognate)

→ Old Armenian անքատ (cognate)