• 僭王せんおう

  usurper king

• 僭主せんしゅ

  usurper, tyrant

• 僭位せんい

  usurpation of a throne

• 僭称せんしょう

  pretension, assumption (of a title)

• 僭用せんよう

  exceeding one's authority to use something

• 僭越せんえつ

  presumptuous, arrogant, audacious, forward, insolent

• 僭主制せんしゅせい

  tyranny

• 僭上越権せんじょうえっけん

  overstepping one's powers (competence, authority), abuse of one's legal authority, acting ultra vires

• 僭越ながらせんえつながら

  by your leave, with your permission

• 僭すせんす

  to usurp boastfully

• 僭上せんじょう

  audacity, forwardness, effrontery, impertinence

• 僭するせんする

  to usurp boastfully