僭せん用よう

noun, noun or participle which takes 'suru'

exceeding one's authority to use something; unauthorized use; presumptuous use

Formal term for using something beyond one's rightful authority or permission; often implies an overstepping of bounds. Rare in everyday speech.

• 彼かれは会かい社しゃの備び品ひんを僭せん用ようして問もん題だいになった。

  He got into trouble for using company equipment without authorization.

• その役やく人にんは権けん限げんを僭せん用ようしたとして非ひ難なんされた。

  The official was criticized for exceeding his authority in using that power.