Impassable is a related term of pathless.
As adjectives the difference between impassable and pathless
is that impassable is incapable of being passed over, crossed, or negotiated while pathless is without a path or trail.
impassable
English
Adjective
(
en adjective)
Incapable of being passed over, crossed, or negotiated.
(of an obstacle) Incapable of being overcome or surmounted.
(of currency) Not useable as legal tender.
Synonyms
* unpassable
See also
* impassible
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pathless
English
Adjective
(
en adjective)
Without a path or trail.
(figurative) unexplored
Synonyms
* (unexplored) trackless, uncharted, unknown, virgin