There are a few synonyms for the term "Saint David," the patron saint of Wales. One of the most common synonyms is "Dewi Sant," which is the Welsh translation of Saint David's name. Another synonym is "David of Wales," which is a more descriptive and straightforward way of referring to him. Additionally, Saint David is sometimes referred to as the "David the Bishop" or "David of Menevia," as he was a bishop of the diocese of Menevia in Wales. Lastly, some may refer to him simply as "the patron saint of Wales," which encompasses his significant role in Welsh culture and history.