純正
Meanings
Describes something unadulterated, authentic, or not mixed with impurities. Often used for substances, motives, or qualities.
This wine is characterized by its pure taste.
His genuine feelings came across.
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).
He devotes himself to research in pure mathematics.
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.
Please use genuine parts for the repair.
Genuine accessories are a bit expensive but of good quality.
Usage patterns
- 純正の〈物〉を使うto use a genuine (manufacturer-original) part or product
I use the genuine manufacturer oil for this motorcycle.
- 〈物〉は純正ではないto say something is not a genuine (original) part
This part isn't genuine—it's an aftermarket one.
- 純正〈物〉に交換するto replace something with a genuine (manufacturer) part
I replaced the broken battery with a genuine one.
- 純正数学を専攻するto major in pure mathematics
I majored in pure mathematics in college.