Latin trāditor

→ English traitor (derived)

→ Catalan traïdor (inherited)

→ Middle English traytour (derived)

→ Spanish traidor (inherited)

→ Old French traitor (derived)

→ Irish tréatúir (derived)

→ Galician traidor (derived)

→ Occitan traite (derived(oc/fr))

→ Occitan traite (derived)

→ Occitan traïdor (derived)

→ Old Occitan trachor (derived)

→ Portuguese traidor (derived)

→ Romanian trădător (derived)

→ Old Portuguese traedor (derived)

→ Walloon traite (derived)