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fantasize

or phan·ta·size

[fan-tuh-sahyz]
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verb (used without object), fan·ta·sized, fan·ta·siz·ing.
  1. to conceive fanciful or extravagant notions, ideas, suppositions, or the like (often followed by about): to fantasize about the ideal job.
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verb (used with object), fan·ta·sized, fan·ta·siz·ing.
  1. to create in one's fancy, daydreams, or the like; imagine: to fantasize a trip through space.
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Also especially British, fan·ta·sise.

Origin of fantasize

First recorded in 1925–30; fantas(y) + -ize
Related formsfan·ta·siz·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for fantasize

fantasize

fantasise

verb
  1. (when tr, takes a clause as object) to conceive extravagant or whimsical ideas, images, etc
  2. (intr) to conceive pleasant or satisfying mental images
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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

Word Origin and History for fantasize

v.

1926, from fantasy + -ize. Related: Fantasized; fantasizing. An earlier verb was fantasticate (c.1600).

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Online Etymology Dictionary, © 2010 Douglas Harper