純正
1
pure;genuine;real
これは純正の英語とは違った文体だ。
This is a writing style different from genuine English.
2
pure (of a subject of study; as opposed to applied, practical, etc.)
3
genuine (parts, accessories, etc.);official;first-party
Other forms
醇正 【じゅんせい】 (rarely used kanji form)