妄想

1. Origins, structure, and basic meaning

• Structure: 妄想 is read もうそう and means a delusion or an unfounded idea.
• Basic usage: It describes thoughts crossing with reality in a novel and a conclusion made without evidence.

2. Common pitfalls and similar expressions

• Contrast with reality
  • 妄想と現実 directly contrasts delusion with reality.
• Scope of にすぎない
  • 単なる妄想にすぎない limits it to nothing more than an unfounded idea.