unpassable

About 0.01 uses per million words.

Meaning

1. adjective Not able to be passed. Not able to be passed; not capable of being beaten at the net by a passing shot.
2. adjective Not able to be passed; not capable of being beaten at the net by a passing shot.
3. adjective Unable to pass successfully as the gender one wishes to be seen as.

Similar words

unclimbable untraversable unnavigable impassable unsurmountable unpassible passless impassible unbridgeable intransitable

Often followed by

for during except mountains gulf and deserts