WordNet: inaccessible, unaccessible

capable of being reached only with great difficulty or not at all

• attribute accessibility, availability, availableness, handiness

• similar to outback, remote

• similar to pathless, roadless, trackless, untracked, untrod, untrodden

• similar to out of reach, unapproachable, unreachable, unreached

• similar to un-come-at-able, un-get-at-able, ungetatable

inaccessible

• (englanti) accessible (antonym)
• (suomi) luoksepääsemätön (synonyymi)

unaccessible

• (suomi) vaikeasti lähestyttävä (synonyymi)