1a person who does not belong to a particular organization or profession:to the outsider, glitzy fashion shows may seem an outrageous extravagance
a person who is not accepted by or who isolates themselves from society:she felt that his friends despised her as an outsider
2a competitor, applicant, etc. thought to have little chance of success:the winner was Beech Road, a fifty-to-one outsiderhe started as a rank outsider
