modified
fancied, illusory, fanciful, unreal, invented, visionary, shadowy, chimerical, dreamy, dreamlike, hypothetical, theoretical, delusive, deceptive, imagined, hallucinatory, ideal, notional, whimsical, fabulous, unsubstantial, nonexistent, apocryphal, fantastic, mythological, legendary, fictitious, make-believe, imaginative; see also fanciful 1, unreal.
Antonyms real*, factual, existing.
See imaginary in Webster's New World Roget's A-Z Thesaurus II
Existing only in the imagination:
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