GRC
Bailly
ἀπο·φάσκω (seul. prés.) nier, contredire, SOPH. O.R. 485 ; PLUT. M. 393 c, etc.
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LSJ
= ἀπόφημι, only in pres. inf. and part., and impf. : — deny, Plu. 2.393c; τί τινος Simp. in Ph. 218.11; — Pass., Dam. Pr. 445; in S. OT 485 οὔτε δοκοῦντ’ οὔτ’ ἀποφάσκονθ) is interpreted by Sch. οὔτε πιστὰ οὔτε ἄπιστα ΄neither commanding assent nor suffering denial) (but better referred to ἐμέ understood, ΄neither assenting nor denying΄); — ὁ ἀποφάσκων [λόγος], name of a sophism, Arr. Epict. 3.9.21; title of work by Chrysippus, Stoic. 2.8.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
(φάσκω), verneinen, leugnen : Soph. O.R. 485 δοκοῦντα καὶ ἀποφάσκοντα, Schol. πιστὰ καὶ ἄπιστα, vgl. Hermann. Auch Sp.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)