at Her/His Majesty's pleasure

US /æt hər/hɪz ˈmædʒɪstiz ˈplɛʒər/
UK /æt hər/hɪz ˈmædʒɪstiz ˈplɛʒər/
"at Her/His Majesty's pleasure" picture
1.

听候女王/国王陛下发落, 根据女王/国王陛下的意愿

(of a period of detention or employment) for an indefinite period, dependent on the will of the monarch or government

:
The prisoner was sentenced to be detained at Her Majesty's pleasure.
囚犯被判处听候女王陛下发落
He holds his position at His Majesty's pleasure, meaning he can be dismissed at any time.
他担任的职位听候国王陛下发落,这意味着他随时可能被解雇。