Proto-Indo-European *oḱto(w)-dḱomt

→ Catalan vuitanta (mention)

→ Greek ογδόντα (mention)

→ Spanish ochenta (mention)

→ French huitante (mention)

→ Ancient Greek ὀγδοήκοντα (mention)

→ Italian ottanta (mention)

→ Latin octoginta (mention)

→ Portuguese oitenta (mention)

→ Sardinian otanta (mention)