ἀθεμελίωτος
From LSJ
ἑὰν δὲ προσποιούμενος ᾗ τὰ μαθήματά πως ἀπείρως προβάλλων, οὐκ ἔστιν αἰτίας ἔξω → But should one profess knowledge as he puts forward something in an inexperienced way, he is not without blame (Pappus 3.1.30.31f.)
English (LSJ)
ἀθεμελίωτον, = ἀκροσφαλής (apt to trip, unsteady, precarious, insecure, apt to throw down, slippery, dangerous), ψεύστης, Hsch. ; ἀ. οἰκία, of a ship, Secund. Sent. 17.
Spanish (DGE)
-ον
que carece de cimientos οἰκία fig. de un barco, Secund.Sent.14, de un razonamiento teológico ἔπεσέν σου ἡ στάσις ἡ ἀ. Epiph.Const.Haer.44.4.14, cf. Hsch.s.u. ἀτερμάτιστος.
German (Pape)
ohne Grundlage, Sp.