ἄσπειστος
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
English (LSJ)
ον, (σπένδω)
A to be appeased by no libations, implacable, D.25.52; κότος Nic.Th.367; πόλεμοι ἄσπειστοι, = ἄσπονδοι, Plu.2.537b, cf. S.E.P.3.175.