IPA: /ˈloʊnər/
KK: /ˈloʊnər/
A person who prefers to be alone and does not seek the company of others.
He is a loner who enjoys spending time by himself rather than with friends.
Loner → It is formed from "lone" (from Old English *anlone*, meaning alone or solitary) and the suffix "-er" (meaning a person who). A loner is a person who is alone or prefers to be alone.
Think of someone who is 'alone' ('lone') and the '-er' just means a person. A loner is someone who prefers to be by themselves.