Aux frais de la Princesse = At another’s expense (chiefly of the State Government).
Prise
Ils étaient aux prises = They had closed; They were at close quarters.
Je les ai mis aux prises = I have set them one against the other.
Je leur ai donné prise sur moi = I gave them a handle on me.
Lâcher prise = To let go one’s hold.
Procès
Sans autre forme de procès = Without any more ado.
Promener