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la-la land

American  
[lah-lah] / ˈlɑˌlɑ /

noun

Slang.

  1. a state of being out of touch with reality.

  2. (usually initial capital letters) Los Angeles.

La-La land British  
/ ˈlɑːˌlɑː /

noun

  1. a nickname for Los Angeles

  2. (not capitals) a place that is remote from reality

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
la-la land Idioms  

  1. Los Angeles, California (often abbreviated L.A.). This expression pokes fun at the alleged eccentricities of the city's inhabitants. For example, What do you expect? Frederick has lived in la-la land for ten years and it has rubbed off on him . [ Slang ; c. 1980]

  2. A state of being out of touch with reality, as in I don't know what's going on with Amy—she seems to be in la-la land . [ Slang ; c. 1980] Also see cloud-cuckoo land ; never-never land .

Etymology

Origin of la-la land

1980–85; reduplication of L.A., abbreviation of Los Angeles

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.