λῃστρικῶς

From LSJ

εἰπὼν ἃ θέλεις, ἀντάκουε ἃ μὴ θέλεις → if you say what you want, hear in response what you don't want

Source

French (Bailly abrégé)

adv.
comme des brigands.
Étymologie: λῃστρικός.

Russian (Dvoretsky)

λῃστρικῶς: по-разбойничьи Plut.