na-adjective, noun
Describes something unadulterated, authentic, or not mixed with impurities. Often used for substances, motives, or qualities.
このワインは純正な味わいが特徴だ。
This wine is characterized by its pure taste.
彼の純正な気持ちが伝わってきた。
His genuine feelings came across.
na-adjective, noun
Used in academic contexts to distinguish pure or theoretical study from applied or practical fields. Common in phrases like 純正数学 (pure mathematics).
彼は純正数学の研究に専念している。
He devotes himself to research in pure mathematics.
na-adjective, noun
genuine (parts); official; first-party
Refers to authentic, manufacturer-branded parts, accessories, or products, as opposed to third-party or compatible items. Common in commercial and technical contexts.
修理には純正部品を使ってください。
Please use genuine parts for the repair.
純正アクセサリーは少し高いが品質が良い。
Genuine accessories are a bit expensive but of good quality.
純粋 is more common for 'pure' in the sense of innocent, unadulterated, or sheer. 純正 is often used for authenticity or academic purity.
本物 means 'the real thing' as opposed to a fake or imitation. 純正 emphasizes genuineness in the sense of being official or unadulterated, often in commercial or academic contexts.
Compound of 純 (pure, genuine) and 正 (correct, right). The combination conveys the idea of being purely correct or authentic. The rare form 醇正 uses 醇 (rich, pure) with a similar meaning.