loner
Definitions
A person who prefers not to associate with others.
Someone who habitually spends time alone or lives in isolation.
Examples
He was always a bit of a loner, preferring to spend his weekends reading in the library rather than attending parties.
Despite being a loner by nature, she found a sense of belonging when she joined the local hiking club.
The detective was a classic loner who worked best when he didn't have to rely on a partner.
Synonyms
recluse solitary hermit introvert outsider lone wolf misanthrope
Antonyms
socialite extrovert gregarious companion partygoer mixer socializer