A.well-based, well-built, “περὶ τοῖχον ἐϋσταθέος μεγάροιο” Il.18.374, al.; ἐντὸς ἐϋσταθέος μεγάρου, ἐκτὸς ἐϋ. θαλάμου, Od. 20.258, 23.178.
II. metaph., steadfast, tranquil, “ψυχαί” Democr. 191; “ἀνήρ” Plu.2.44a; “οἱ -έστεροι” Hdn.2.6.5; “γνώμη” Aret.SA1.10; -έστεροι γνώμῃ ib.2.3; περὶ τῆς εὐσταθοῦς τῶν θεῶν διαγωγῆς dub. in Phld.D.3tit.
2. of the body, sound, healthy, “σαρκὸς εὐσταθὲς κατάστημα” Epicur.Fr.68, Metrod.Fr.5; of persons, healthy, sound, Ath. Med. ap. Orib.inc.7.1.
5. generally, steady, quiet, “βίος” Hierocl. p.53A.; “ἁρμονία” D.H.Dem.36; in political sense, firmly established, “μοναρχία” Phld.Hom.p.31 O.
III. Adv. -“θῶς, ἔχειν” Sor.1.40, cf. D.L.7.182, Asp.in EN115.3; “στρατοπεδεῦσαι” App.Hisp.25, al.: Sup. -έστατα Id.BC2.115; Aeol. -“θέως” IG12(2).243 (Mytilene).