1.
orthodox, legitimate, authentic
Following the established, traditional, or officially recognized line of succession, doctrine, or method. Describes something that adheres to the original or accepted standard.
Usage
Used as a na-adjective (正統な) to describe something as orthodox or legitimate. The compound 正統派 means 'orthodox school' or 'traditionalist.' Often used in discussions of lineage, religious doctrine, culinary tradition, or artistic schools.
Similar words
正当 means 'just, rightful, valid' — focusing on moral or legal justification. 正統 means 'orthodox, legitimate' — focusing on adherence to established tradition or lineage. Both are read せいとう but written with different kanji.