Bruno of Toul, also known as Bruno the Carthusian, was a notable monk and theologian who lived in the 11th century. While there aren't many synonyms for his name specifically, there are some related words that may be of interest. For example, Bruno was one of the founders of the Carthusian Order, so words like "monk," "religious," or "ascetic" could be used to describe him. Additionally, he was a renowned scholar, so "theologian," "philosopher," or "scholar" are also relevant terms. Finally, given that Bruno was a bishop of Toul, one could also use the title "bishop" or refer to him as the "Bishop of Toul".