Definition of "unnavigable" []

• Not navigable; impossible to sail through (adjective)
• That cannot be used for any reason. (adjective)

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• "On either hand they confront the naked poles, and they recoil from unnavigable space to an intenser struggle among themselves."
• "Many of you have seen the open road of your life become a narrow, unnavigable little path into a darkness you don't want to go."
• "Himself, my brainy-sweet husband, in dull shock, his mind maneuvering an unnavigable new reality."