παραπαίω

A. strike on the side, strike falsely, χέλυν A. Fr. 314.
II. intr., strike a false note : metaph., to be infatuated, lose one's wits, Id. Pr. 1056 (anap.) ; ληρεῖν καὶ π. Ar. Pl. 508, cf. Pax 90(anap.) ; μαίνομαι καὶ π. Pl. Smp. 173e, cf. Plb. 12.8.1 ; παραπεπαικότας Plu. 2.963f ; to be in error, Phld. Sign. 32 ; π. τι commit a folly, Luc. Hist.Conscr. 2 ; π. πρὸς ὑλικὰς δυνάμεις Eun. VS p.474 B.:—also in pf. part. Pass., φωναὶ ‐πεπαις μέναι mad, foolish, S. Ichn. 234.
b. Medic., to be delirious, Gal. 10.850,al.
2. fall away from, τῆς ἀληθείας Plb. 3.21.9 ; τοῦ δέοντος Id. 4.31.2,al.
3. dash in, prob. in Philox. 2.26.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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