outsider
n. countable C1 Advanced Oxford US //aʊtˈsaɪdɝ// UK //aʊtsˈaɪdɐ// out·sider
n. someone who does not belong to a particular group or is not accepted by it. You might feel like an outsider if you start a new job where everyone else has been friends for years.
n. a person who is not part of a specific group, profession, or social circle. Often used to describe someone who lacks the shared knowledge or status of those within a community.
As the only new student, I felt like an outsider.
The company hired an outsider to manage the department because they wanted a fresh perspective on their old problems.
The novel explores the perspective of an outsider who observes the rigid social customs of the village without ever truly understanding the underlying motivations of the residents.
From outside + -er.