ἀντιστρατοπεδεύεσθαι
From LSJ
τὸ δὲ ποιεῖν ἄνευ νοῦ ἃ δοκεῖ καὶ σὺ ὁμολογεῖς κακὸν εἶναι: ἢ οὔ → but doing what one thinks fit without intelligence is—as you yourself admit, do you not?—an evil
Greek > English (Woodhouse Verbs Reversed)
(see also ἀντιστρατοπεδεύω): encamp against, encamp opposite
Lexicon Thucydideum
castra ex adverse ponere, to pitch camp opposite, 1.30.4, 4.124.2.