IPA: //ʌnˈriːtʃəbl//
KK: /ʌnˈriːtʃəbl/
Not able to be reached or accessed; something that cannot be contacted or obtained.
The remote island was unreachable by boat during the storm.
Unreachable → It is formed from "un-" (meaning not) and "reach" (from Old English "ræcan", meaning to stretch out or extend) and "-able" (meaning capable of). The word "unreachable" means not capable of being reached or attained.
Think of 'not' ('un-') being able to 'stretch out' ('reach') to something — that's why 'unreachable' means something you cannot reach.