Saca

First attested in the 17th century as a back-formation from Sacae, from Latin Sacae, an adapted form of Old Persian 𐎿𐎣𐎠 (s-k-a /⁠Sakā⁠/, “Scythian”), from 𐎿𐎣 (s-k /⁠Saka⁠/, “Scythia”), from Scythian. Now mostly displaced by later Saka, ultimately from the same source via Sanskrit. Doublet of Saka, Shaka, and Scyth.