hallucination

1 a conception or image created by the imagination and having no objective reality were the voices real, or merely a hallucination? Synonyms chimera, conceit, daydream, delusion, dream, fancy, figment, fantasy, illusion, nonentity, phantasm (also fantasm), pipe dream, unreality, visionRelated Words ignis fatuus, mirage, will-o'-the-wisp; brainchild, idea; concoction, fable, fabrication, fiction, invention; envisaging, imaging, visualization; cloud-cuckoo-land, cloudland, Shangri-la, utopia; daymare, nightmareNear Antonyms actuality, fact, reality

2 a false idea or belief the common hallucination that gluttony during the holiday season doesn't have consequences Synonyms delusion, error, falsehood, falsity, fallacy, illusion, misbelief, misconception, myth, old wives' tale, untruthRelated Words factoid; superstition; fiction, pretense (or pretence); distortion, inaccuracy, misapprehension, miscomprehension, misinterpretation, misjudgment, misperception, misunderstanding; misinformation, misknowledge, misreport, misrepresentation, misstatement; sophism, sophistry; fib, half-truth, lie, story, taleAntonyms truth, verity