noun, noun or participle which takes 'suru'
usurping a throne
Rare, formal term for seizing a throne or imperial authority. Used in historical or literary contexts.
簒立は歴史上、しばしば武力によって行われた。
Usurpation of the throne was often carried out by force in history.
簒奪 is a more common term for usurpation in general, while 簒立 specifically refers to usurping a throne.
The exact derivation is uncertain; the kanji 簒 means 'usurp' and 立 means 'establish', together conveying the idea of seizing and establishing oneself on the throne.