否認

1. Origins, structure, and basic meaning

• Structure: Written 否認 and read ひにん, it is a formal denial that an alleged involvement, act, or signature is genuine or true.
• Basic usage: It appears when a suspect rejects involvement and when disputed authorship prompts handwriting examination.

2. Common pitfalls and similar expressions

• Denial rather than lack of knowledge
  • The person explicitly refuses to accept the asserted fact, not merely says they do not know.