unnavigable
Impossible to cross
Unnavigable describes a body of water or passage that cannot be traveled by boat or ship, typically due to shallow depth, rocks, ice, rapids, or other obstructions: The river becomes unnavigable above the falls.
Extended to other domains, it describes anything impossible to traverse or find one's way through: an unnavigable bureaucracy, The website's interface was completely unnavigable.
Cannot be reached
- impenetrableImpossible to pass through
- untraversableCannot be crossed
- unreachableCannot be accessed
- insurmountableImpossible to overcome
blocked · unpassable · unfordable · barrier · deadlock · chokepoint · cul-de-sac · dead-end
Passage prevented or impeded
- cloggedBlocked by buildup
- congestedBlocked by overcrowding
- jammedUnable to move freely
- siltedObstructed by sediment
overgrown · dammed · choked · barricaded · occluded · impeded · snarled · entangled
Fraught with danger
- dangerousApt to cause harm
- hazardousLikely to cause injury
- riskyInvolving possible harm
- precariousDangerously insecure
unforgiving · deadly · hostile · forbidding · menacing · threatening · ominous · daunting
Extremely complex and winding
- maze-likeComplex and winding
- disorientingCausing loss of direction
- bewilderingCausing utter confusion
- convolutedExcessively complex or twisted
tangled · winding · twisting · serpentine · meandering · unmarked · featureless · trackless
inaccessible
Cannot be reached
- impenetrableImpossible to pass through
- untraversableCannot be crossed
- unreachableCannot be accessed
insurmountable · blocked · unpassable · unfordable · barrier · deadlock · chokepoint · cul-de-sac · dead-end · gridlock
blocked
Passage prevented or impeded
silted · overgrown · dammed · choked · barricaded · occluded · impeded · snarled · entangled · shoaled
perilous
Fraught with danger
precarious · unforgiving · deadly · hostile · forbidding · menacing · threatening · ominous · daunting · treacherous
labyrinthine
Extremely complex and winding
- maze-likeComplex and winding
- disorientingCausing loss of direction
- bewilderingCausing utter confusion
convoluted · tangled · winding · twisting · serpentine · meandering · unmarked · featureless · trackless · unmapped
navigate, navigator, navigation, navigating, navigable, navigated, circumnavigate, navigational, navigators