an outsider
Definitions
A person who does not belong to a particular group, organization, or society.
Someone who is excluded from or remains on the periphery of a social or professional circle.
Examples
He always felt like an outsider in his new school because he didn't share the same interests as his classmates.
As an outsider to the industry, she brought a fresh perspective that helped the company solve its long-standing problems.
The villagers were suspicious of him because he was an outsider who had only recently moved to the area.
Synonyms
foreigner stranger alien outcast intruder newcomer nonmember