To sell all of a product that is in stock. / (intransitive) To abandon or betray one's supporters or principles to seek profit or other personal advantage.

(uncountable) The proportion of wholesale items that are eventually sold at retail / (uncountable) The practice of retailing items (such as DVDs) that are normally, or were previously rented

The final date on which a perishable product can be legally sold to the public. / (idiomatic, by extension) Used to indicate that something, or someone, is old and out of date.

A sales technique of pressuring the potential buyer to agree to a purchase. / A sales transaction which is challenging for the sales person to make; any act or object of persuasion which is challenging.

A sales technique which is quietly persuasive and subtle, seeking to convince the buyer without being forceful.

The large-scale selling of goods or financial stocks.

Alternative spelling of sellout

To make a sale to a client who is not a lead but an unqualified prospect.

(sports) To succeed in deceiving an opposing player with a feigned action.

plural of hard sell