The name “Admatha” might mean “God given.” (Source: Cornwall / Smith 1997 )

In Libras (Brazilian Sign Language) it is translated with a sign that signifies the number 7 (he was one of the “seven princes of Persia and Media”) and “wise man.” Also, since another possible meaning of his name is “a testimony to them,” this sign being inspired by the sign for “witness.” (Source: Missão Kophós )

“Abagtha” in Libras (source )

For more information on translations of proper names with sign language see Sign Language Bible Translations Have Something to Say to Hearing Christians .