transitive verb
1. : to part with by sale : dispose of entirely
sold out their stock within an hour
2. : to sell the goods of (a debtor) in order to pay off debts from the proceeds
3.
a. : to sell in open market (stocks or commodities) to satisfy an uncovered margin or other unpaid obligation
b. : to sell the stocks or commodities of in such manner
4. : to prove false to : betray
sold out his best friend
intransitive verb
1. : to dispose of one's goods by sale
had to sell out at a loss
2. : to betray one's cause or associates
accused him of selling out