ἀλλ' ἦν ἅπαντα τεταγμένα νόμων ἐπιταγαῖς → but all their acts were regulated by prescriptions set forth in laws
silent: V. σιγηλός, σιωπηλός.
secretive: P. κρυψίνους (Xen.).
be reticent about: P. and V. σιγᾶν (acc.), σιωπᾶν (acc.), V. διασιωπᾶν (acc.).