impassable

Word family  noun pass overpass ≠ underpass passage passing adjective passing passable ≠ impassable verb pass

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++im·pass·a·ble /ɪmˈpɑːsəbəl $ ɪmˈpæ-/ adjective  TRAVELa road, path, or area that is impassable is impossible to travel along or through 不能通行的，无法通过的 The mountains are impassable. 连绵的群山无法翻越。

Examples from the Corpus

impassable• Quite apart from the major wetlands, every valley bottom below a certain contour line must have been soggy and at times impassable.• The moral gulf between the households was soon judged by Nana to be impassable.• Were the roads really as impassable as he claimed?• The alternative route down the locks became virtually impassable as the locks were allowed to deteriorate.• There were so many drugs in the streets they were impassable at times.• The introduction to this book said that the Himalayas have formed an impassable barrier in the distribution of Eastern wildlife.• Roads became impassable for lack of maintenance.• The flooding made many streets impassable Sunday.• Beyond there the gorge walls are often vertical or steep slopes of rubble, impassable whatever the season.

im·pass·a·ble adjectiveChineseSyllable  

road, Corpus area a impassable path, that or is

impassable
im‧pass‧a‧ble /ɪmˈpɑːsəbəl $ ɪmˈpæ-/ adjectivea road, path, or area that is impassable is impossible to travel along or through:
    The mountains are impassable.

im·pass·ableBrE /ɪmˈpɑːsəbl/ 🔊NAmE /ɪmˈpæsəbl/ 🔊 adjective(of a road, an area, etc. 道路、地区等) impossible to travel on or through, especially because it is in bad condition or it has been blocked by sth 不能通行的（尤指因路况恶劣或被阻断） OPP passable