sellout
n. B2 Upper Intermediate US //ˈsɛˌɫaʊt// UK //sˈɛlaʊt// sell·out
n. a person who betrays someone or something they were supposed to protect. It can also mean a person who is very popular and sells out of everything they offer.
n. a person who betrays a cause, organization, or individual for personal gain. In a commercial context, it refers to a performer or product that is so popular that all available tickets or stock are sold out.
He was a total sellout who only cared about money.
The band's new album was a sellout, with every copy disappearing from the shelves within hours of release.
The politician was labeled a sellout by his former allies after he signed a controversial trade deal that benefited his private interests over the public good.
A deverbal from sell out.