delusion,illusion,hallucination,mirage mean something that is believed to be true or real but that is actually false or unreal.
delusion implies an inability to distinguish between what is real and what only seems to be real, often as the result of a disordered state of mind.
illusion implies a false ascribing of reality based on what one sees or imagines.
hallucination implies impressions that are the product of disordered senses, as because of mental illness or drugs.
mirage in its extended sense applies to an illusory vision, dream, hope, or aim.
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“Mirage.”Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mirage. Accessed 18 Jul. 2025.
mirage
nounmirage
nounThesaurus:All synonyms and antonyms formirage
Nglish:Translation ofmirage for Spanish Speakers
Britannica.com:Encyclopedia article aboutmirage
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