ἰσόνειρος
From LSJ
ἵνα οὖν μηδ' ἐν τούτῳ δῷ αὐτοῖς λαβήν (Photius, Fragments on the Epistle to the Romans 483.26) → so that he doesn't give them even here a handle (= an opportunity for refutation)
English (LSJ)
ον,
A dream-like, empty, A.Pr.549 (lyr.) [perh. ῑ].
German (Pape)
[Seite 1265] einem Traume gleich, nichtig, Aesch. Prom. 548.