We don't have synonyms for Treta Yuga yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are krita yuga.
(N) :
Treta Yuga (IAST: Tretā-yuga), in Hinduism, is the second and second-best of the four yugas (world ages) in a Yuga Cycle, preceded by Krita (Satya) Yuga and followed by Dvapara Yuga.
(N) :
Treta Yuga (IAST: Tretā-yuga), in Hinduism, is the second and second-best of the four yugas (world ages) in a Yuga Cycle, preceded by Krita (Satya) Yuga and followed by Dvapara Yuga.