sell out

British  

verb

1. Also (chiefly Brit): sell up.  to dispose of (supplies of something) completely by selling

2. informal (tr) to betray, esp through a secret agreement

3. informal (intr) to abandon one's principles, standards, etc

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noun

1. informal a performance for which all tickets are sold

2. a commercial success

3. informal a betrayal

4. informal a person who betrays their principles, standards, friends, etc

sell out Idioms  

1. Dispose of entirely by selling. For example, The rancher finally sold out to the oil company , or The tickets to the concert were sold out a month ago . [Late 1700s]

2. Betray one's cause or colleagues, as in He sold out to the other side . [ Slang ; late 1800s]

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Example Sentences

Iglesias also took a pause to relate one other historic fact about the two stadiums in L.A. he’s now been able to sell out.

From Los Angeles Times

“I grabbed everything because it might sell out,” she said.

From The Wall Street Journal

Sawgrass put an exclamation mark on that before sell out crowds.

From BBC

When a sick bat comes out, it sells out almost instantly.

From The Wall Street Journal

With every EFP round came fresh promises they would never sell out to "big beer".

From BBC