Lexical Definition

‎πλανάω‎ planáō (plan-ah'-o) to lead astray ^G:V
from ‎πλάνη‎

go astray, deceive, err, seduce, wander, be out of the way.

• to (properly, cause to) roam (from safety, truth, or virtue)

Abbott-Smith

πλανάω, -ῶ (< πλάνη), [in LXX chiefly for תּעה;]
to cause to wander, lead astray. Pass., to go astray, wander: Mt 18:12, 13, He 11:38, I Pe 2:25 (cf. Is 53:6). Metaph., to lead astray, deceive: c. acc. pers., Mt 24:4, 5, 11, 24, Mk 13:5, 6, Jo 7:12, II Ti 3:13, I Jo 1:8 2:26 3:7, Re 2:20 12:9 13:14 19:20 20:3, 8, 10; pass., to be led astray, to err: Mt 22:29, Mk 12:24, 27, Lk 21:8, Jo 7:47, II Ti 3:13, Tit 3:3, He 5:2, II Pe 2:15, Re 18:23; τ. καρδίᾳ, He 3:10; ἀπὸ τ. ἀληθείας, Ja 5:19; μὴ πλανᾶσθε, I Co 6:9 15:33, Ga 6:7, Ja 1:16 (cf. ἀπο-πλανάω).†

Abbott-Smith References

Liddell-Scott-Jones

πλανάω-άω,

future -ήσω [LXX]:—passive and middle, future -ήσομαι [Refs 5th c.BC+]: aorist ἐπλανήθην [Refs 5th c.BC+]: perfect πεπλάνημαι [Refs 5th c.BC+]: (πλάνη):—Prose verb, ={πλάζω} (used once in [Refs 8th c.BC+], cause to wander, [Refs 5th c.BC+]

__2 lead from the subject, in talking, [Refs 4th c.BC+]
__3 lead astray, mislead, deceive, ἢ γνώμη πλαν; [NT+5th c.BC+]; πλανῶν τὴν ἔξοδον, of the Labyrinth, [Refs 2nd c.AD+]
__II passive, wander, stray, ἵπποι πλανόωνται ἀνὰ δρόμον [Refs 8th c.BC+]; of the planets, [Refs 5th c.BC+]; of reports, travel abroad, πολλὰ.. ἐμπόρων ἔπη φιλεῖ π. [Refs 5th c.BC+]
__II.b c.accusative loci, πλανηθεὶς τήνδε βάρβαρον χθόνα having wandered over it, [Refs 5th c.BC+] wandering about as in a labyrinth, [Refs 5th c.BC+]
__II.2 wander in speaking, π. ἐν τῷ λόγῳ [Refs 5th c.BC+]; digress, π. ἀπὸ τοῦ λόγου [Refs 5th c.BC+]
__II.3 with genitive, πλαναθεὶς καιροῦ having missed the right moment, [Refs 5th c.BC+]
__II.4 do a thing irregularly or with variation, [Refs 5th c.BC+]; ἐνύπνια τὰ ἐς ἀνθρώπους πεπλανημένα the varying dreams that visit them, [Refs 4th c.BC+]; πεπλανημένον τρόπον irregularly, [Refs 5th c.BC+]; to be unsettled, τὰ τῆς ἐλευθερίας ἔτι πλανώμενα καταστήματα [Refs 1st c.AD+]
__II.5 to be in doubt or at a loss, π. τὸ θέλει τὸ ἔπος εἶπαι [Refs 5th c.BC+]; π. τῇ διανοίᾳ, ταῖς διανοίαις, [Refs 5th c.BC+]
__II.6 in forensic Rhet., χρώματα πεπλανημένα, μετάθεσις πεπ., of alternative pleas, [Refs 2nd c.AD+]
__II.7 to be misled, ὑπὸ φωνῆς κοινότητος [Refs 1st c.BC+]

_{LSJ Scripture Refs: John.7.12}