IPA: /ˌɪnəˈsɛsəblɪ/
KK: /ɪnəˈsɛsəblɪ/
In a way that cannot be reached or accessed.
The remote village was inaccessibly located in the mountains, making it hard for visitors to arrive.
Inaccessibly → It is formed from "in-" (meaning not) and "access" (from Latin "accessus", meaning approach or entry) and the suffix "-ibly" (meaning in a manner). The word "inaccessibly" means in a manner that is not approachable or cannot be accessed.
Think of 'not' ('in-') being combined with 'approach' ('access') to remember that 'inaccessibly' means something that cannot be approached.