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English definition of “impassable”

impassable

adjective     /ɪmˈpɑː.sə.bl̩/ US  /-ˈpæs.ə-/
describes a road or path that cannot be travelled on because of bad weather conditions or because it is blocked: Many roads were flooded and impassable following the storm.Routes and roads in general
(Definition of impassable adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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