inaccessible
🇺🇸
/ˌɪnækˈsesəbl/
🇬🇧
/ˌɪnækˈsesəbl/
not able to be reached or used
The ancient ruins are so well hidden that they are inaccessible to most tourists.
not easy to understand or appreciate
The complex theories were too inaccessible for the average student to grasp.