The name "Bartimaeus" is a unique and uncommon name with limited recognized synonyms. However, one possible substitute could be "Bartholomew," which is a similar-sounding name of Hebrew origin meaning "son of Talmai." Additionally, "Bart" or "Barty" could be used as shortened forms of Bartimaeus for a more casual setting. One may also use the word "blind" as a synonym as Bartimaeus was best known for being the blind man in the biblical story of Mark 10:46-52. Overall, while limited, these synonyms provide alternative ways to refer to or describe the character of Bartimaeus.