We don't have synonyms for kumbhar yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are kumbha and kumhar.
(n) :
Alternative form of Kumhar. [A member of a caste or community in India, Nepal, Bangladesh, and Pakistan, historically associated with the art of pottery.]
(n) :
Alternative form of Kumhar. [A member of a caste or community in India, Nepal, Bangladesh, and Pakistan, historically associated with the art of pottery.]