Accessible, a.
Etymology: [L. accessibilis, fr. accedere: cf. F. accessible. See Accede.]
1. Easy of access or approach; approachable; as, an accessible town or mountain, an accessible person.
2. Open to the influence of; -- with to. "Minds accessible to reason." Macaulay.
3. Obtainable; to be got at. The best information . . . at present accessible. Macaulay.
Shades of meaning
Fernald has no entry of its own for accessible; he lists it under friendly.
Where he writes about it:
In its application to persons, accessible is used of public and eminent persons, who might, if disposed, hold themselves at a distance from others. — from friendly