Delusion
Fantasy
noun, verbal noun
もうそう
幻 (まぼろし) Illusion, Phantom, Apparition
幻想 (げんそう) Fantasy, Illusion
妄想 (もうそう) Delusion, Fantasy
幻覚 (げんかく) Hallucination
錯覚 (さっかく) Illusion, Optical Illusion
It was a Delusion for him to think he could mow もう soo そう many lawns in one day.