Quick Definition
σύνοιδα v. I know, consider, am privy to
Strong's Definition
from 4862 and 1492; to see completely; used (like its primary) only in two past tenses, respectively meaning to understand or become aware, and to be conscious or (clandestinely) informed of
KJV Usage: consider, know, be privy, be ware of
UBS Dictionary of the Greek New Testament
verb | pf.ptc.fem. συνειδυῖα | οἶδα
28.4 · Know · Know
to know, to be conscious of, to be aware of to be aware of information about something
verb | aor.ptc. συνιδών | ὁράω
27.5 · Learn · Learn
to learn about, to find out about to acquire information, with focus upon the event of perception
32.13 · Understand · Come To Understand
to understand clearly, to realize fully, to become fully aware of to come to understand clearly on the basis of perceived information
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Mounce Concise Greek Dictionary
σύνοιδα synoida 2x
a defective verb that is actually perfect in form but present in meaning, to share in the knowledge of a thing; to be privy to, Acts 5:2; to be conscious; οὐδέν σύνοιδα, to have a clear conscience, 1 Cor. 4:4*
Abbott-Smith Greek Lexicon
** συν-εῖδον irreg. aor. of συνοράω (v.s. εἶδον),
[in LXX: I Mac 4:21א, II Mac 2:24 4:4, 41 R 5:17 7:4, 20 8:8, III Mac 2:8 A * ;]
to see together or at the same time (Arist., Xen.).
to see in one view, hence, of mental vision, to comprehend, understand (LXX, Polyb., Plut., al.) : Ac 12:12 14:6 (on the related σύνοιδα, v. s.v.).†
Moulton & Milligan — Vocabulary of the Greek NT
συνεῖδον. See s.v. σύνοιδα. σύνειμι (from εἰμί, ‘‘am”), ‘fam with” (Lk 918, Ac 2211): cf. P Flor I. 99° (i/ii A.D.) (= Selections, p. 71) τοῦ συνόντος ἀνδρός, “her present husband,” P Oxy VI. 90718 (A.D. 276) IIpeloka τῇ συνούσῃ μοι [γυναικί, ‘ Prisca my present wife.” The verb is very common of coming together in wedlock, e.g. P Tebt I. 10429 (marriage contract—B.C. 92) μηδ᾽ ἄλλω[ι] ἀνδρ[}] συνεῖναι, ‘not to have intercourse with another man,” P Ryl II. 1544 (A.D. 66) ‘adjrod lived with Chaeremon as his wife” (Edd.), P Oxy II. 26718 (A.D. 36) ἐπεὶ δὲ σύνεσμεν ἀλλήλοις ἀγράφωϊ[ς], “and since we are living together without a marriage contract” (Edd.), 2. 11. 237%" 43 (A.p. 186) τούτῳ τῷ ἀνδρὶ οὐθὲν [προσ ]ήκ[ει] συνῖναι, “‘she ought not to live with this man.” For the double comp%. συνένειμι, see P Oxy VI. 929)? (ii/iii A.D.) ταῦτα δὲ πάντα συνγνενῆι els τὸν χιτῶνα τὸν καροῖνον, ‘‘all these were inside the brown tunic.
Liddell-Scott-Jones — Greek-English Lexicon
συνείδω (suneidō) — be aware. σύνοιδα, perfect with present sense, 1st pers. plural σύνισμεν [Refs 5th c.BC+], Ionic dialect συνοίδαμεν [Refs 5th c.BC+], 3rd.pers. plural συνίσᾱσι [Refs 5th c.BC+]; infinitive ξυνειδέναι [Refs 5th c.BC+]pluperfect with imperfect sense, συνῄδειν, Attic dialect συνῄδη, dual συνῄστην, plural -ῇσμεν, -ῇστε, -ῇσαν, Ionic dialect2nd pers. plural συνῃδέᾰτε [Refs 5th c.BC+]: future συν (ξυν-) είσομαι [Refs 5th c.BC+], and aorist participle -ειδήσας[Refs 1st c.BC+]:—know something about a person, especially as a potential witness for or against him, ἢ (i.e. Δίκη) σιγῶσα σύνοιδε τὰ γιγνόμενα πρό τ᾽ ἐόντα [Refs 6th c.BC+]; τά τοι ἐγὼ καὶ ἀμφότερα συνειδὼς ἔχω μαρτυρέειν to both of which I, knowing them true of you, can testify, [Refs 5th c.BC+]; τὰ Μηδικὰ καὶ ὅσα αὐτοὶ σύνιστε our other services to which you can testify, [Refs 5th c.BC+]; ὑπολαμβάνων παρ᾽ ὑμῶν ἑκάστῳ τὸ συνειδὸς ὑπάρχειν μοι believing that I can rely on your acknowledgement of my services, [Refs 4th c.BC+]; τί μοι σύνοισθα τοιοῦτον εἰργασμέν; [Refs 5th c.BC+]; ξυνειδὼς οὐ φράσει; [Refs 5th c.BC+]; οὐκ αἰσχυνοῦμαι.. εἰπεῖν (variant) ἅπασιν ὅσα σύνοιδ᾽ αὐτῷ κακά [Refs 5th c.BC+]; θνῄσκοντι συνείσῃ (conjecture Reiske for συνοίσῃ) thou wilt witness my death, [Refs 5th c.BC+]; δύ᾽ ἡμῶν ἢ τρία κακὰ ξυνειδὼς εἶπε δρώσας μυρία (i.e. Εὐριπίδης) [Refs 5th c.BC+]; καὶ τίνα σύνοισθά μοι καλουμένῃ βροτῶ; [Refs 4th c.BC+]; σύνοιδα τοῖς πλείστοις αὐτῶν ἥκιστα χαίρουσι I can bear witness that most of them are far from pleased.., [Refs 5th c.BC+]; with a mixture of dative and accusative construction, συνίσασι γὰρ αὐτῷ.. καθιστάμενον, ἐκ δὲ τούτων.. δυνάμενον [Refs 7th c.BC+]; ἐξ ὧν αὐτὸς σύνοισθα σαυτῷ ἐν τῇ τῶν γραμμάτων μαθήσει from your experience of yourself.., [Refs 5th c.BC+]; σύνοιδ᾽ ἐμαυτῇ πολλὰ (δείν᾽) [NT+5th c.BC+]; συνειδότες αὑτοῖς with full consciousness, [Refs] W.:—with participle __a in nominative, πῶς οὖν ἐμαυτῷ τοῦτ᾽ ἐγὼ ξυνείσομαι, φεύγοντ᾽ ἀπολύσας ἄνδρ; [Refs 5th c.BC+] __b in dative, σύνοιδα ἐμαυτῷ ἀντιλέγειν οὐ δυναμένῳ [Refs 5th c.BC+]
2. with dative of things, know something about a thing, τοῖς διὰ τῶν εἰκότων τὰς ἀποδείξεις ποιουμένοις λόγοις σύνοιδα οὖσιν ἀλαζόσιν [Refs 5th c.BC+]; καιρὸς.. σὲ εἰπεῖν ἃ σύνοισθα τῷ βίῳ ἑκάστῳ what you know about each life, [Refs 2nd c.AD+]
II. share the knowledge of something with somebody, to be implicated in or privy to it, οὐδὲ ξυνῄδει σοί τις ἔκθεσιν τέκνο; [Refs 5th c.BC+]; ξύνοιδε δ᾽ οὔτις οἰκετῶν νόσον[Refs 5th c.BC+]; συνειδέναι δὲ (i.e. τὰς μαντηΐας) καὶ τοὺς Πυθίους [NT+5th c.BC+]participle
II. a in dative, μήτε τῳ ξυνειδέναι τὸ πρᾶγμα βουλεύσαντι [Refs 5th c.BC+]
II. b in accusative, ἀνδράποδα, ἂ συνῄδει τὴν γυναῖκα.. θάνατον μηχανωμένην [Refs 5th c.BC+]
III. know well, αὐτὸς ξυνειδώς, ἢ μαθὼν ἄλλου πάρ; as from his own knowledge, or.. ? [Refs 5th c.BC+]; so also (unless there is ellipse of reflexive pronoun) σύνοιδα δείν᾽ εἰργασμένος [Refs 5th c.BC+]
IV. with dative of things. to be privy to, [Refs 1st c.BC+]; τῷ φόνῳ [Refs 2nd c.AD+]
V. τὸ συνειδός complicity, τὸ σ. τοῦ πράγματος [Refs 1st c.AD+]; consciousness, τοῦ ἐνδεοῦς [Refs]
V.2. conscience, ὑπὸ συνειδότος ἐπαρρησιάζετο ἀγαθοῦ [Refs 5th c.BC+]
VI. ὡς ἂν συνειδῇς as you may think proper, [Refs 6th c.AD+]