plural of outside

The part of something that faces out; the outer surface. / The external appearance of someone or something. / The space beyond some limit or boundary.

Of or pertaining to the outer surface, limit or boundary. / Of, pertaining to or originating from beyond the outer surface, limit or boundary. / Away from the interior or center of something.

To or in the outdoors or outside; to or in an area that is beyond the scope, limits, or borders of a given place. / (colloquial) Not in prison. / Outdoors.

On the outside of, not inside (something, such as a building). / Beyond the scope, limits, or borders of. / Near, but not in. / (usually with “of”) Except, apart from.

(slang, US) To residents of Alaska, the rest of the United States, especially the contiguous 48 states south of Canada.

One who is not part of a community or organization. / A newcomer with little or no experience in an organization or community. / A competitor or contestant who has little chance of winning; a long shot

plural of outsider

A pair of nippers for turning a key in a keyhole from the outside.

Outside. / Aside from; besides.