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in one's own world
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Idioms and Phrases
Also, in one's own little world ; in a world of one's own . In deep thought or concentration. For example, Luanne was really in her own world at the meeting this morning , or Like many mathematicians, Bill lives in his own little world , or Bob's in a world of his own when he's listening to music . [Late 1500s]Advertisement
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.
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