trangeni fu'ivla

x1 is transgender, exhibiting gender x2 (ka), which differs from their assigned gender x3 (ka)

The same umbrella term as in English: x1's gender identity differs from the one they were assigned at birth. Transgender as lujvo: datytracinse. See also lingeni, singeni.

In notes:

klegeni
x1 has x2 (ka) as their gender; x1 identifies as gender x2.
nimpinji
p1 is a/the penis of p2=n1 (female).
nongeni
x1 is agender. x1's gender identity is not identifying with any gender.
singeni
x1 is cisgender, exhibiting gender x2 (ka), which is the one they were assigned at birth
tonsi
x1 is transgender / nonbinary / gender-non-conforming