Part of speech:
Of a set of points containing all its limit points, as the set of points on and within a circle: complementary to an open set
Leaving no track, or trail
Not having been walked on or traversed:
The definition of impenetrable is cannot be passed through or solved.
Not surmountable; that cannot be passed over or overcome; insuperable
Free from limitations, boundaries, or restrictions:
Acceptable for general circulation:
Used by travelers
(Anat.) Lacking the normal opening
Incapable of being passed through or penetrated
Incapable of being negotiated or overcome
Find another word for impassable. In this page you can discover 26 synonyms, antonyms, idiomatic expressions, and related words for impassable, like: closed, blockaded, not fit for travel, obstructed, pathless, trackless, untrodden, impenetrable, forbidden, insurmountable and open.