an extravagant mental image or daydream, or the power or process of creating one, e.g. in response to a psychological need
a creation of the unrestricted imagination whether expressed or merely conceived, e.g. a fantastic design or idea
a fantasia
imaginative fiction or drama characterized esp by strange, unrealistic, or grotesque elements
unrestricted creative imagination; fancy
[Middle English fantasie via French from Latin phantasia imagination, appearance, ultimately from Greek phantazein: see fantastic]