mountainous
🇺🇸
/ˈmaʊntənəs/
🇬🇧
/ˈmaʊntənəs/
having many mountains
The mountainous area was difficult to travel through because of the steep hills.
険しい丘のために、この山岳地帯は移動が困難でした。
very large in size or amount
The mountainous waves crashed against the shore during the storm.
嵐の間、巨大な波が岸に激しく打ち寄せました。