unnavigable Syllabification: (un·nav·i·ga·ble)Pronunciation: /ˌənˈnavəgəbəl/Definition of unnavigable adjective (of a waterway or sea) not able to be sailed on by ships or boats. Derivatives unnavigabilityPronunciation: /-ˌnavəgəˈbilətē/ noun unnavigable in other Oxford dictionaries Definition of unnavigable in the British & World English dictionary
