Lexical Definition

‎βουλεύω‎ bouleúō (bool-yoo'-o) to plan ^G:V
from ‎βουλή‎

consult, take counsel, determine, be minded, purpose.

• to advise, i.e. (reflexively) deliberate, or (by implication) resolve

Abbott-Smith

βουλεύω (< βουλή), [in LXX chiefly for יעץ;]
to take counsel, deliberate, resolve. In mid.,
1. to take counsel with oneself, consider: seq. εἰ, Lk 14:31.
2. to determine with oneself, resolve: c. inf., Ac 5:33 27:39; c. acc., II Co 1:17; seq. ἵνα, Jo 11:53 12:10 (cf. παρα-, συμ-).†

Abbott-Smith References

Liddell-Scott-Jones

βουλεύω-εύω,

[Refs 8th c.BC+], aorist ἐβούλευσα [Refs 8th c.BC+], Epic dialect βούλ- [Refs 8th c.BC+]: perfect βεβούλευκα [Refs 5th c.BC+]:—middle and passive, see below: (βουλεύωή):—take counsel, deliberate, in past tenses, determine or resolve after deliberation:

__1 absolutely, ὣς βουλεύωεύσαντε [Refs 8th c.BC+]; βουλεύωευέμεν ἠδὲ μάχεσθαι in council or in battle, [Refs 8th c.BC+]; ἔς γε μίαν βουλεύωεύσομεν (i.e. βουλεύωήν) we shall agree to one plan, [Refs 8th c.BC+]: in Prose, chiefly middle in this sense, see below [Refs 5th c.BC+]
__2 with accusative of things, deliberate on, plan, devise, β. βουλεύωάς [Refs 8th c.BC+]; οὐ.. τοῦτον μὲν ἐβούλευσας νόον αὐτ; [Refs 8th c.BC+]:—passive (with future middle, [Refs 4th c.BC+], aorist ἐβουλεύωεύθην [Refs 5th c.BC+]perfect βεβούλευμαι (usually in middle sense, see infr. B):—to be determined or planned, ψῆφος κατ᾽ αὐτῶν βουλεύωεύσεται [Refs 5th c.BC+].; τὰ βεβουλεύωευμένα, ={βουλεύωεύματα}, [βουλεύωευόμενα 5th-6th c.BC: Xenophon Historicus “Institutio Cyri (Cyropaedia)” 6.2.2; πῶς σφῷν βεβούλευται 5th-6th c.BC: Plato Philosophus “Euthydemus” 274a. ">Refs 5th c.BC+]
__3 with infinitive, take counsel, resolve to do, τὸν μὲν ἐγὼ βούλευσα.. οὐτάμεναι [Refs 8th c.BC+]:— passive, τοῖσι ἐβεβούλευτο τὸ παιδίον προσουδίσαι [Refs]
__II give counsel, τὰ λῷστα β. [Refs 5th c.BC+]: with dative person, advise, ἵνα σφίσι βουλεύωεύησθα [Refs 8th c.BC+]
__III sit in council, of the Spartan γέροντες, [Refs 5th c.BC+]; to be a member of a βουλεύωή, [Refs 4th c.BC+]; especially of the Council of [βουλεύωὴ ἡ βουλεύωεύουσα 5th c.BC: Lysias Orator 13.19 ">Refs 5th c.BC+]; βουλεύωὴν β. to be a member of the β., [Refs]; βουλεύωεύειν λαχών [Refs 5th c.BC+]
__B middle, future -εύσομαι[Refs 5th c.BC+]: aorist ἐβουλεύωευσάμην [Refs 5th c.BC+]; Epic dialect βουλεύω- [βουλεύωεύθην 1st c.BC: Dionysius Halicarnassensis 15.7 ">Refs 8th c.BC+]: perfect βεβούλευμαι [Refs 5th c.BC+] —more frequently in _Attic dialect_ Prose than active,
__B.1 absolutely, take counsel with oneself, deliberate, [Refs 5th c.BC+]; ὑπέρ τινος[βουλεύωήν 5th-6th c.BC: Plato Philosophus “Politicus” 298b, etc.; ἴσον τι ἢ δίκαιον 5th c.BC: Thucydides Historicus 2.44 ">Refs 5th c.BC+]:—also like active, take counsel, πρός τινας [LXX]
__B.2 act as member of council, and so originate measures, β. καὶ κρίνειν [βουλεύωευόμενον [prev. work] 1291a28. ">Refs 4th c.BC+]
__B.3 with accusative of things, determine with oneself, resolve on, κακὴν ἀπάτην βουλεύωεύσατο [Refs 8th c.BC+] (middle here only in [Refs 8th c.BC+]
__B.4 with infinitive, resolve to do, [Refs 5th c.BC+]
__B.5 rarely followed by Relat., β. ὅ τι ποιήσεις [Refs]; β. ὅπως.. with subjunctive, [Refs 5th c.BC+]; β. πῶς τις, with future, [NT+2nd c.BC+]

_{LSJ Scripture Refs: John.12.10}