English Language

“Illusion” (Noun) means: An image or appearance that is deceptive, something that is not really what it seems to be, or something that misleads or deceives intellectually. Synonyms of “illusion” are: Conceit, chimera, fantasy, nonentity, hallucination, figment, phantasm, delusion, misconception, misapprehension, fancy, deception, fallacy, self-deception, false impression, false belief, etc. “Delusion” (Noun) means: Delusion is the state of believing things or having beliefs on ideas, philosophy, etc. that is not true, an idea or a belief that is not true, false idea, or the act of tricking or deceiving someone. Synonyms of “Delusion” are almost same as of “illusion”: Misconception, mistaken idea, misapprehension, fancy, illusion, deception, hallucination, fallacy, self-deception, false impression, phantasm, misbelief. “Allusion” (Noun) means: A slight hint, an implied or indirect reference of someone or something (especially in literature). Synonyms of “Allusion” are: Reference, mention, suggestion, hint, implication, innuendo, intimation, insinuation, casual remark, indirect reference, etc. Thus, the right answer is “Delusion.” Important Note: “Delusion” is something when we have belief in something that is not real. It is a result of deception, misconception, or mental disorder. On the other hand, “illusion” is a false interpretation or perception of something that has objective existence.