We don't have synonyms for thanka yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are thanks, thank and tanka.
(n) :
Alternative spelling of thangka. [A painted or embroidered linen banner, usually depicting Buddhist themes, originating in Tibet; a prayer flag.]
(n) :
Alternative spelling of tanka. [A form of Japanese verse in five lines of 5, 7, 5, 7, and 7 morae.]
(n) :
Alternative spelling of thangka. [A painted or embroidered linen banner, usually depicting Buddhist themes, originating in Tibet; a prayer flag.]
(n) :
Alternative spelling of tanka. [A form of Japanese verse in five lines of 5, 7, 5, 7, and 7 morae.]