<p><strong>Noun</strong></p><ul><li>a person not belonging to a particular group, set, party, etc.: Society often regards the artist as an outsider.</li><li>a person unconnected or unacquainted with the matter in question: Not being a parent, I was regarded as an outsider.</li><li>a racehorse, sports team, or other competitor not considered likely to win or succeed.</li><li>a person or thing not within an enclosure, boundary, etc.</li></ul>