We don't have synonyms for trans-woman yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are transwoman and trans woman.
(n) :
(sometimes proscribed) Alternative spelling of trans woman. [A transgender or transsexual woman; a woman who was assigned male at birth, that is, a person who was assigned male at birth, but has a female or primarily female gender identity.]
(n) :
(sometimes proscribed) Alternative spelling of trans woman. [A transgender or transsexual woman; a woman who was assigned male at birth, that is, a person who was assigned male at birth, but has a female or primarily female gender identity.]