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unnavigability

  • a word derived from navigable.
    navigable
    adjective
    deep and wide enough to provide passage to ships.
  • a word derived from unnavigable.
    unnavigable
    adjective
    difficult or impossible to navigate.

Example Sentences

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A survey of the upper river proved its unnavigability even had a portage been possible.

From True Tales of Arctic Heroism in the New World by Adolphus W. Greely