Outside  —n. 1 external side or surface; outer parts. 2 external appearance; outward aspect. 3 position on the outer side (gate opens from the outside). —adj. 1 a of, on, or nearer the outside; outer. B not in the main building (outside toilet). 2 not belonging to a particular group or organization (outside help). 3 (of a chance etc.) Remote; very unlikely. 4 (of an estimate etc.) The greatest or highest possible (the outside price). 5 (of a player in football etc.) Positioned nearest to the edge of the field (outside left). —adv. 1 on or to the outside. 2 in or to the open air. 3 not within, enclosed, or included. 4 slang not in prison. —prep. 1 not in; to or at the exterior of. 2 external to, not included in, beyond the limits of.  at the outside (of an estimate etc.) At the most. From the outside from an objective or impartial standpoint.