ἀπλανησία
From LSJ
τὸ ἐμόν γ' ἐμοὶ λέγεις ὄναρ → you are telling me what I know already, you are telling me my own dream
English (LSJ)
ἡ,
A freedom from error, S.E.M.7.394.
German (Pape)
[Seite 292] ἡ, Nicht-Täuschung, Sext. Emp. adv. Math.
Greek (Liddell-Scott)
ἀπλᾰνησία: ἡ, τὸ μὴ πλανᾶσθαι, δηλ. τὸ μὴ ἀπατᾶσθαι, Σέξτ. Ἐμπ. πρὸς Μ. 7. 394.