Proto-Indo-European *deh₂w-

→ Breton deviñ (inherited)

→ Welsh deifio (root)

→ Welsh deifio (inherited)

→ Ancient Greek δύη (derived)

→ Ancient Greek δαΐς (derived)

→ Ancient Greek δαίω (derived)

→ Latin duellum (derived)

→ Sanskrit दुनोति (root)

→ Sanskrit दुनोति (mention)