Q: what a sellout とはどういう意味ですか?
A: In the context of talking about another person a sellout can mean someone who abandons their morals/ideals for personal gain, often used in show business.
Ex: Did you hear she signed a record deal and completely changed her sound, she is such a sell out

A Business or store can also “sell out” of a product, it is more commonly heard as “sold out” but I just basically means that they are out of that product.
Ex: I would have gotten tickets for Coachella but they were all sold out

Hope this helps!
Q: sellout とはどういう意味ですか?
A: It depends on the scenario. You can sellout of your inventory and no longer sell products to customers. Or you can be a sellout in which you give up your morals, dignity, and standards in order to make money.
Q: sellout とはどういう意味ですか?
A: It means betraying a cause or betraying one's principles for advancement, for example, you play rock and roll music in a band but because you can get more money playing in a pop band you start to play pop music even though you don't like it.


Q: sellout を使った例文を教えて下さい。
A: He was a sellout.

The sellout got a shorter jail sentence for rating us out

He was a sellout because he stayed with the company for money

Its like if someone does something morally questionable to get something that benefits themselves like money