Translation

本物の / 真正の / 正真正銘の

Meaning

Authentic means real, genuine, and not fake. It is used for documents, signatures, food, art, products, and experiences. Do not confuse it with authoritative, which means reliable or officially expert.

Examples

• 専門家はその署名が本物だと確認した。
  The expert confirmed that the signature was authentic.
• その店は本格的なタイ料理で有名です。
  The restaurant is known for authentic Thai food.