We don't have synonyms for sramana yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sravana, samana and pramana.
(n) :
(religion, inexact, sometimes proscribed) Synonym of samana (“Indian ascetic, particularly in Hindu and Jain contexts”).
(n) :
Alternative letter-case form of sramana, an Indian ascetic. [(religion, inexact, sometimes proscribed) Synonym of samana (“Indian ascetic, particularly in Hindu and Jain contexts”).]
(n) :
(religion, inexact, sometimes proscribed) Synonym of samana (“Indian ascetic, particularly in Hindu and Jain contexts”).
(n) :
Alternative letter-case form of sramana, an Indian ascetic. [(religion, inexact, sometimes proscribed) Synonym of samana (“Indian ascetic, particularly in Hindu and Jain contexts”).]