unreachable
Definitions
Impossible to reach or access physically.
Unable to be contacted or communicated with.
Beyond the range or capacity of attainment.
Examples
The remote mountain peak remained unreachable due to the heavy snowstorm.
I tried calling him all afternoon, but his phone was unreachable.
The goal of complete perfection is often unreachable for human beings.
Synonyms
inaccessible unattainable unobtainable remote distant unapproachable out-of-reach
Antonyms
accessible attainable obtainable reachable available approachable handy