- Exterior - External - On or to the exterior of - On the exterior - The external part of a thing; the part, end, or side which
forms the surface; that which appears, or is manifest; that which is
superficial; the exterior. - The part or space which lies without an inclosure; the
outer side, as of a door, walk, or boundary. - The furthest limit, as to number, quantity, extent, etc.;
the utmost; as, it may last a week at the outside.