ἀδοιάστως
From LSJ
εἰ ἀποκρυπτόντων τῶν Μήδων τὸν ἥλιον ὑπὸ σκιῇ ἔσοιτο πρὸς αὐτοὺς ἡ μάχη καὶ οὐκ ἐν ἡλίῳ → if the Medes hid the sun, the battle would be to them in the shade and not in the sun
English (LSJ)
(δοιάζω)
A without doubt, Anacr.95. [οῐ l.c.]
Greek (Liddell-Scott)
ἀδοιάστως: (δοιάζω) χωρὶς ἐνδοιασμοῦ, Ἀνακρ. 95. [οῐ ἐν τόπῳ].
Spanish (DGE)
sin dudar μένω σ' ἀδοιάστως Anacr.55.
Russian (Dvoretsky)
ἀδοιάστως: без сомнения Anacr.