adj. 25B6; adjective
unapproachable islands : INACCESSIBLE, unreachable, remote, out of the way, isolated, far-flung; informal off the beaten track, in the middle of nowhere, in the sticks, unget-at-able.
her boss appeared unapproachable : ALOOF, distant, remote, detached, reserved, withdrawn, uncommunicative, guarded, undemonstrative, unresponsive, unforthcoming, unfriendly, unsympathetic, unsociable; cool, cold, frosty, stiff, formal; informal stand-offish.
accessible, friendly.