belief in something unreal
Fantasy is something that although seemingly real, truly is not. Fantasies exist subjectively so they can either be misinterpretations of the meaning of actual things or internal fabrications of meanings that are not accurate. Neither one can be consciously intentional or one would be aware of the untruth of the Fantasy. Fantasies are not necessarily bad. In fact, they can be the best way for a character to clarify the nature of his goal. Maintaining the Fantasy allows one to practice responses so that Fantasy might actually turn into fact. Of course, when one lets a Fantasy grow such that it extends beyond the goal and into the means of evaluating progress toward the goal, the Fantasy can become self-sustaining and only imagined progress is ever made.
syn. false belief, faith in the imaginary, delusion, erroneous conviction