unpassable

adj

1. (not-comparable)Not able to be passed.

   “For many, the discerning of God's will seems like an insurmountable trial or an unpassable test. Rather than complete the exam, they'd just as soon walk away.”

2. (not-comparable)Not able to be passed.
3. (not-comparable)Unable to pass successfully as the gender one wishes to be seen as.

   “I resolved that night that I would never, ever turn my back on a transgender friend — be they transsexual, cross-dresser, drag queen, or gender-fuck — no matter how unpassable they might be or how much they might get me clocked.”