Latin trāditiōnem

→ Catalan tradició (borrowed)

→ Spanish traición (derived)

→ Old French treason (derived(fro/en))

→ Old French traison (derived)

→ Ido trahizar (derived)

→ Italian tradizione (borrowed)

→ Norman trahison (mention)

→ Portuguese traição (derived)

→ Old Portuguese traiçon (derived)