noun
Formal, rare noun referring to the act of seizing power, rights, or position without authority. Mostly found in historical or legal contexts.
その将軍は王位の僭取を企てた。
The general plotted the usurpation of the throne.
Also means usurpation, but more commonly used and often implies violent or illegal seizure of power.
The kanji 僭 means 'overstep' or 'presume', and 取 means 'take'. The compound literally means 'to take by overstepping authority'. The exact historical derivation is uncertain.