ἀθεμείλιος
From LSJ
Βοηθὸς ἴσθι τοῖς καλῶς εἰργασμένοις → Bonis inceptis addas auxilium tuum → Erweise dich als Helfer dem, was gut getan
English (LSJ)
ον, A without foundation, Ep. word implied by Hsch. ἀθέμηλος· οὐδὸν οὐκ ἔχουσα οὐδὲ θεμέλιον, and ἀθεμίλιος· ἀκροσφαλής, ψεύστης.