noun
hostile nature; inimical character
Formal term used in political, military, or legal contexts to describe something as having a hostile or enemy character. Often appears in compounds like 敵性国家 (hostile nation) or 敵性行為 (hostile act).
その国は敵性国家と見なされた。
That country was regarded as a hostile nation.
敵性行為に対しては厳しい対応を取る。
We will take strict measures against hostile acts.