A.to be steady, stable, ὅταν πολίταις εὐσταθῶσι δαίμονες are favourable, E.Rh.317; “εὐ. ταῖς διανοίαις” D.H.6.51; εὐστάθει rest in peace! in an epitaph, IG14.1464; to be calm, tranquil, of the sea, Luc.VH1.30; “οὐκ εὐ. οἱ ὄρνιθες” Plu.2.281b.
2. enjoy sound, stable health, “εὐ. καὶ ὑγιαίνειν” Epicur.Fr.68, cf. 413, Sor.1.87, Herod. Med. ap. Orib.7.8.1.
3. of cities or countries, enjoy tranquillity, “εὐσταθοῦσα βασιλεία” OGI56.19 (Canopus, Ptol. III); τὴν πόλιν εὐ. SIG 708.37 (Istropolis, ii B.C.), cf. App.Hisp.9.