An indefinable or elusive quality that makes a person, performance, product, or thing especially attractive, effective, or successful.
A distinctive charm, charisma, or special attribute that cannot be easily described but noticeably enhances appeal or impact.
2.
USUKGeneralneutral
An unknown, unpredictable, or decisive variable in a situation; a factor that can significantly influence an outcome but whose nature or magnitude is uncertain.
3.
UKUSGeneralproper nouninformal
The title of a televised talent competition franchise in which contestants perform and are judged, commonly referred to simply as 'The X Factor'.