How to say "authentic" in Japanese

• 真正しんせいCommon
  na-adjective, no-adjectiveCovers 'authentic' as verifiedly genuine or true, stressing that something is really what it claims to be. Typical when certifying a document, artwork, or object as the real thing rather than a fake.
• 本格的ほんかくてきCommon
  na-adjectiveCovers 'authentic' in the sense of the real, full-scale, properly done version of something, such as authentic cuisine or craft. It emphasizes seriousness and completeness rather than proving an item is not a fake.

Use 真正 for asserting something is genuinely what it claims to be, and 本格的 for the 'authentic, full-scale, done properly' sense of things like cuisine or craft.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 真正しんせいgenuine
• 本格的ほんかくてきgenuine
• 正真しょうしんtrue
• オーセンティックauthentic
• 信頼に足るしんらいにたるauthentic
• 本場風ほんばふうauthentic (to the region it is from)
• 正真正銘しょうしんしょうめいgenuine
• 折り紙付きおりがみつきguaranteed
• 信頼のおけるしんらいのおけるreliable
• 紛いもないまがいもないunmistakable
• まごうかたなきunmistakable
• 本当ほんとうgenuine