impassable synonyms

impassable

modif.

closed, blockaded, not fit for travel, obstructed, pathless, trackless, untrodden, impenetrable, forbidden, insurmountable; see also difficult 1.

Antonyms open*, passable*, traveled.

Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.