無許可

1. Origins, structure, and basic meaning

• Structure: Spelling: 無許可. Reading: むきょか. Core meaning: unauthorized; without permission.
• Basic usage: Representative examples: 無許可で建物に入ることは禁止されている / 係員は無許可の撮影をやめるよう求めた.

2. Common pitfalls and similar expressions

• Adverbial and noun-modifying forms
  • Use 無許可で to describe acting without permission and 無許可の to modify a noun, as in unauthorized filming. The particles serve different grammatical roles.