Lexical Definition

‎συμφωνέω‎ symphōnéō (soom-fo-neh'-o) to agree with G:V
from ‎σύμφωνος‎

agree (together, with).

Usage: 8 forms in 9 verses
Form Translated As     In Verse(s)
συνεφώνησεν joined in harmony LXX.Isa.7.2
συνεφώνησαν joined in harmony LXX.Gen.14.3LXX.2Kgs.12.8
συνεφώνησάσ you did agree with Matt.20.13
συνεφωνήθη it was agreed together Acts.5.9
συμφωνοῦσιν agree Acts.15.15
συμφωνήσωσιν shall agree Matt.18.19
συμφωνήσει it will match Luke.5.36
συμφωνήσασ Having agreed Matt.20.2

Abbott-Smith

συμ-φωνέω, -ῶ, [in LXX: Ge 14:3 (חבר) II Ki 12:8 (9) (אוֺת ni.), Is 7:2 (נוּחַ), IV Mac 14:6 * ;]
prop., to agree in sound, be in harmony (Plat., Arist.). Metaph.,
(a) to agree with, agree together: Lk 5:36; c. dat. rei, Ac 15:15; seq. περί, Mt 18:19; pass., c. dat. pers., συνεφωνήθη ὑμῖν, Ac 5:9;
(b) to agree as to a price (Polyb., Diod.): c. dat. pers., gen. pret., Mt 20:13; seq. μετά . . . ἐκ, ib. 2.†

Abbott-Smith References

Book Refs
Genesis 14:3
2 Samuel 12:8
Isaiah 7:2
Matthew 18:19 · 20:2 · 20:13
Luke 5:36
Acts 5:9 · 15:15

Liddell-Scott-Jones

συμφωνέω-έω,

sound together, be in harmony or unison (compare συμφωνέωία), ἐκ πασῶν μία ἁρμονία συμφωνέωεῖ [Refs 5th c.BC+]; of reed-tongues, to be of the same quality, [Refs 4th c.BC+]; κιθαρισταὶ σ. [συμφωνέωία 111:">Refs 3rd c.BC+] —passive, τὰ συμφωνέωούμενα consonants (literal things which are sounded with vowels), [Refs 1st c.BC+]

__II metaphorically, harmonize with, ποῖα ποίοις σ. τῶν γενῶν [Refs 5th c.BC+]; συμφωνέωοῦντα τοῖς ἔργοις in harmony with practical experience, [συμφωνέωοῦσι.. φροντίδες μακαριότητι 4th-3rd c.BC: Epicurus Philosophus “Epistulae” 1p.28U.; also ταῦτα πρὸς ἄλληλα σ. συμφωνέωίαν τὴν ἀρίστην 4th c.BC: Aristoteles Philosophus “Politica” 1334b10 ">Refs 5th c.BC+]; hold or express the same opinions, ταῦτα συμφωνέωοῦσι πάντες [Refs 5th c.BC+]; περί τινος or τινων, [Refs 1st c.BC+]:—middle, [Refs 4th c.BC+]:—passive, to be agreed to, παρὰ πᾶσι [Refs 1st c.BC+], compare 15.107: with infinitive, ἔφοδος σ. γενέσθαι [Refs 1st c.BC+]
__II.2 make an agreement or bargain with any one, ἰδίᾳ σ. πρὸς αὐτούς [συμφωνέωήσας Ἡρακλείδης μετὰ Θοτέως [prev. work] 330.2 (3rd c.BC)">Refs 3rd c.BC+]; περί τινος [Refs 2nd c.BC+]; σ. τινὶ δηναρίου for a denarius, [NT]:—passive, συνεφωνήθη ὑμῖν πειράσαι [NT]; ὥστε.. [Refs 1st c.BC+]; τὸ συμφωνέωηθέν the agreement, [συμφωνέωηθέντα “IG” 42(1).77.20 (Epid., 2nd c.BC); τὰ εἴκοσι τάλαντα τὰ συμφωνέωηθέντα [prev. work]22.844.9 (3rd c.BC)">Refs 3rd c.BC+]; ἀπέχω τὴν συμπεφωνημένην αὐτοῦ τιμήν [Refs 2nd c.AD+]
__II.3 unite for a bad purpose, conspire, τοῖς πένησι ἐπὶ τοὺς μέσους [Refs 4th c.BC+]
__III agree in saying, ὡς πάντα καλῶς κεῖται [Refs 5th c.BC+]
__IV to be satisfactory, συμφωνέωεῖ μοι πάντα, ὡς πρόκειται [Refs 4th c.AD+]
__IV.2 of remedies, to be suitable, [Refs 2nd c.AD+]

LSJ Scripture Refs: Matt.20.13Acts.5.9