What does 主たる mean?
主たる is a Japanese adjective meaning “main; principal; chief; primary” in English. It is written as 主たる in kanji, しゅたる in hiragana, and shutaru in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
私の主たる関心事はあなたの身の安全なのです。
My primary concern is your safety.