sell out

verb
High School
1

To sell all of a product that is in stock.

2

To abandon or betray one's principles to seek profit or other personal advantage; to abandon or betray one's supporters through this change.

3

To betray (a person), usually a close friend or family member, for personal gain.

4

To sell one's business (with a connotative emphasis on entirety and finality).

5

To commit or abandon oneself entirely (to a cause, a team, etc.).

6

To sell one's commission.

7

To hurry out.

#archaic