ἀμετάβατος
From LSJ
ἑτέρως ἠδύνατο βέλτιον ἢ ὡς νῦν ἔχει κατεσκευάσθαι → otherwise they could have been constructed better than they are now (Galen, On the use of parts of the body 4.143.1 Kühn)
English (LSJ)
ον,
A not changing place, stationary, ἥλιος Cleom.2.1; οὐρανός Simp.in Ph.611.5. Adv. -τως without transition, ἀκινήτως καὶ ἀ. Procl.Inst.52, cf. Simp. in Ph.1162.6. 2 Gramm., intransitive, ῥῆμα A.D.Pron.44.12, al. Adv. -τως intransitively, Sch.Ar.Pl. 158. II Pass., incapable of being traversed, i.e. unextended, Epicur. Ep.1p.18U.
German (Pape)
[Seite 122] intransitivum, ῥῆμα, Gramm. – Adv. -τως, wie ein intransit.
Greek (Liddell-Scott)
ἀμετάβᾰτος: -ον, ὁ μὴ μεταβαίνων ἀπὸ τοῦ ἑνὸς εἰς ἄλλο μέρος, ἀμετάβατον ῥῆμα Γραμμ. Ἐπίρρ. -τως Σχόλ.