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Synonyms

out to lunch

Idioms  
  1. Not in touch with the real world, crazy; also, inattentive. For example, If he believes that story, he's really out to lunch, or Anne hasn't heard a word you said—she's out to lunch. This expression transfers a temporary physical absence for the purpose of eating to a temporary or permanent mental absence. [Slang; mid-1900s]


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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Yesterday, we babysat our granddaughter while our daughter and her husband went out to lunch to celebrate her birthday.

From MarketWatch ● Jul. 1, 2026

Phoong didn’t have any merch at the time, so instead she invited the girl out to lunch.

From Los Angeles Times ● Jun. 20, 2024

Similarly, "Pretty Vacant" conveys the emptiness of a conformist, consumer-driven society that is perpetually out to lunch.

From Salon ● Jan. 30, 2024

The comic took her and her family out to lunch the following month after Ms Nuttall was told the tumour had grown back and the family later brought Christmas forward after news it had spread.

From BBC ● May 22, 2023

“This Jones goes out to lunch from twelve to twelve- thirty. So you come around about twelve-forty-five.”

From "A Confederacy of Dunces" by John Kennedy Toole

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