Dictionary.com
Thesaurus.com
Synonyms

imaginary

American  
[ih-maj-uh-ner-ee] / ɪˈmædʒ əˌnɛr i /

adjective

  1. existing only in the imagination or fancy; not real; fancied.

    an imaginary illness; the imaginary animals in the stories of Dr. Seuss.

    Synonyms:
    illusory, baseless, chimerical, shadowy, visionary, fanciful
    Antonyms:
    real

noun

plural

imaginaries
  1. Mathematics. imaginary number.

imaginary British  
/ -dʒɪnrɪ, ɪˈmædʒɪnərɪ /

adjective

  1. existing in the imagination; unreal; illusory

  2. maths involving or containing imaginary numbers. The imaginary part of a complex number, z, is usually written Im z

"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

Other Word Forms

  • imaginarily adverb
  • imaginariness noun
  • nonimaginarily adverb
  • nonimaginarilyness noun
  • nonimaginariness noun
  • nonimaginary adjective
  • preimaginary adjective
  • unimaginary adjective

Etymology

Origin of imaginary

1350–1400; Middle English < Latin imāginārius, equivalent to imāgin-, (stem of imāgō ) image + -ārius -ary

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.

In the South, the book was said to have been “founded on imaginary circumstances, and gross improbabilities” and frequently banned.

From Literature

“Now let’s say there’s a monkey out there and you want to catch him,” he said, making a long swipe at an imaginary monkey.

From Literature

Perhaps so, but the imaginary apocalypse made Easter Island famous.

From The Wall Street Journal

Pilots log hundreds of hours chasing imaginary cars, bikes, and skiers through digital landscapes to practice—so that when the whole world is watching, they can reach their own rarefied plane of athletic zen.

From The Wall Street Journal

In captivity, at least one chimpanzee appeared to drag imaginary blocks across the floor after playing with real wooden ones.

From Science Daily