Outside. / Aside from; besides.

The state or condition of being outside.

With the outside surface turned to be on the inside

at most

On the outer surface / To outward appearances / (UK) Not in prison

One who is not expected to succeed or win, especially one who is unknown.

(art) Art by untrained artists, outside of the institutional mainstream.

plural of outsider artist

An untrained artist who works outside of the mainstream.

Alternative form of outsider art