Occitan òc

← Catalan hoc (cognate)

← Welsh do (cognate)

← English that (cognate)

← French oui (mention)

← Old French o (cognate)

← Proto-Indo-European *tod (cognate)

← Latin hoc (inherited)

← Old Occitan oc (inherited)

← Old Irish tó (cognate)

→ English Languedoc (mention)

→ English Occitania (derived)

→ Catalan hoc (cognate)

→ French oui (cognate)

→ French Languedoc (mention)

→ French langue d'oc (derived)

→ Old French oil (cognate)

→ Portuguese occitano (mention)