当事者性 とうじしゃせい Meanings Noun being an involved party; degree to which one is involved (in a matter); degree to which one is affected (by an issue); (degree of) involvement; (degree of) connectedness; relevancy (to one) Kanji 当 apply. Read as トウ. 事 matter 者 person. Read as シャ. 性 nature. Read as セイ. Jinuma: Japanese Dictionary · Word lists