(n)illusion, fantasy, phantasy, fancysomething many people believe that is false“they have the illusion that I am very wealthy”, “He fancies himself to be a local celebrity.”
(n)fancyimagination or fantasy; held by Coleridge to be more casual and superficial than true imagination“never had the wildest flights of fancy imagined such magnificence”
(n)fondness, fancy, partialitya predisposition to like something“he had a fondness for whiskey”, “she had dismissed him quite brutally, relegating him to the status of a passing fancy, or less”