transgender vs. transgendered

transgender

[trans-jen-der, tranz‑] / ˌtrænsˈdʒɛn dər, ˌtrænz‑ /

adjective

noting or relating to a person whose gender identity does not correspond to that person’s sex assigned at birth: She identifies as transgender.

The organization supports transgender rights.
She identifies as transgender.
noting or relating to a person who does not conform to societal gender norms or roles.

transgendered

[trans-jen-derd, tranz‑] / ˌtrænsˈdʒɛn dərd, ˌtrænz‑ /

Offensive.