/ɪmˈpɑ:səbl; US -ˈpæs- ||; ɪmˈpæsəbḷ/adj (used about a road, etc) impossible to travel on because it is blocked （指道路等）不能通行的: Flooding and fallen trees have made many roads impassable. 很多道路被洪水和倒下来的大树堵塞住。 [OPP] passable 反义词为passable