Outsider/ˌaʊtˈsaɪdər/ Definition 1 of 3Pro Tip 1/3Social Exclusion Use when expressing someone's lack of connection with a social group. Even at the party, Jane remained an outsider. Pro Tip 2/3Emotional Impact Can express feelings of loneliness or isolation. Not knowing their language, I felt like an outsider. Pro Tip 3/3Not Necessarily Negative Sometimes being an outsider gives a fresh perspective or independence. As an outsider, Mark offered unique solutions.