French soixante

← Old French soissante (inherited)

← Old French seixante (mention)

← Proto-Indo-European *sweḱsḱomt (inherited)

← Proto-Indo-European *swéḱs-dḱomt (mention)

← Latin sexāgintā (inherited)

→ Catalan seixanta (cognate)

→ French soixantaine (suffix)

→ French soixantième (suffix)