ἄσειστος

ον, Adv.
A. unshaken, γῆ Max. Tyr.41.4: metaph., εὐδαιμονία Id. 4.5, cf. D.L. 8.26. Adv. ‐τως unshakably, Epicur. Ep. 2p.36U., Arr. Epict. 2.17.33.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project