The best replacement for transgender is gay.

The best alternatives to transgender are rated as following:
★★★★★  gay
★★★★  transsexual
★★★  transgendered
★★★  intersex
★★  genderqueer
★  tomboy
★  cisgender
★  feminism
★  androgynous
★  trans
  homosexual
  drag queen
  queer
  otherkin
  gender dysphoria
  third gender

Your alternative for transgender is not listed? Suggest!
Speaking about transgender, one probably shouldn't forget about chingy.

Other search terms related to transgender and their ratings are:
★★★★★ chingy
You have in mind a companion for transgender and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of transgender in all years. Click on graph for more.
transgender
gay
transsexual