συν-ίημι, 2 pers. plur. συνίετε, 3 pers. plur. συνιοῦσιν (Mt. xiii. 13 RGT; 2 Co. x. 12 Προ. fr. the unused form cuméw), and συνιᾶσιν (2 Co. x.12L T Tr WH), and συνίουσιν (Mt. xiii. 13 L Tr WH fr. the unused συνίω), subjune. 3 pers. plur. cumaoe (RG LT Tr in Mk. iv. 12 and Lk. viii. 10, fr. the unused συνιέω or fr. συνίημι) and συνίωσι (WH in Mk. and Lk. ll. ce., fr. the unused συνίω), impvy. 2 pers. plur. συνίετε, inf. συνιέναι, ptep. συνιῶν (Ro. iii. 11 RG T fr. συνιέω), and συνίων (ibid. L Tr WH, and often in Sept., fr. συνίω), and cumeis (Mt. xiii. 23 Beer WH; Eph. v.17 RG; but quite erroneously συνιών, Grsb. in Mt. lc. [AIf. in Ro. iii. 11; ef. WH. App. p.167; Taf. Proleg. p. 122]; W.81(77 sq.); Β. 48 (42); Fritzsche on Rom. vol. i. p. 174. sq.); fut. συνήσω (Ro. xv. 21); 1 aor. συνῆκα; 2 aor. subjunc. συνῆτε, συνῶσι, impv. 2 pers. plur. σύνετε (Mk. vii. 14 LT Tr WH); (σύν, and typ to send) ; 1. prop. to set or bring together, in a hostile sense, of combatants, Hom. Il. 1, 8; 7, 210. 2. to put (as it were) the perception with the thing perceived; to set or join together in the mind, i.e. to understand, (so fr. Hom. down; Sept. for 1.3 and Sawn) 5 with an acc. of the thing, Mt. xiii. 23, 51; Lk. ii. 50; xviii. 34; xxiv. 45; foll. by ὅτι, Mt. xvi. 12 ; xvii. 13; foll. by an indirect quest., Eph. v. 17; ἐπὶ τοῖς ἄρτοις, ‘on the loaves’ as the basis of their reasoning [see ἐπί, B. 2 a. a.], Mk. vi. 52; where what is understood is evident from the preceding context, Mt. xiii. 19; xv. 10; Mk. vii. 14; absol., Mt. xiii. 18-15; xv.10; Mk. iv. 12; viii. 17, 21; Lk. viii. 10; Acts vii. 25°; xxviii. 26 sq.; Ro. xv. 21: 2 Co. x. 12; ὁ συνιῶν or συνίων as subst. [B. 295 (258 sq.); W. 109 (104)], the man of understanding, Hebraistically i. q. a good and upright man (as having knowledge of those things which pertain to salvation ; see μωρός): Ro. iii. 11 (fr. Ps. xiii. (xiv.) 2). [Syn. see γινώσκω, fin.]

συνίημι syniēmi 26x

also συνίω, see BDAG 972 for a discussion, pr. to send together; met. to understand, comprehend thoroughly, Mt. 13:51; Lk. 2:50; 18:34; 24:45; to perceive clearly, Mt. 16:12; 17:13; Acts 7:25; Rom. 15:21; Eph. 5:17; absol. to be well judging, sensible, 2 Cor. 10:12; to be spiritually intelligent, Mt. 13:13, 14, 15; Acts 28:26, 27; to be religiously wise, Rom. 3:11

συν-ίημι and συνίω (v. Bl., § 23, 7),

[in LXX chiefly for בּין hi., שׂכל hi. ;]

to bring or set together.

Metaph., to perceive, understand: Mt 13:13-15 (LXX), 19 15:10, Mk 4:9 (WH, mg.), 12 7:14 8:17, 21 Lk 8:10, Ac 7:25 28:26, 27, Ro 15:21 (LXX), II Co 10:12; c. acc. rei, Mt 13:23, 51, Lk 2:50 18:34 24:45; seq. ὅτι, Mt 16:12 17:13; seq. quæst. indir., Eph 5:17; ἐπὶ τ. ἄρτοις, Mk 6:52; as subst., συνίων (ὁ σ., WH, mg.), a man of understanding, i.e. in moral and religious sense, Ro 3:11 (LXX).†

συνίημι. For the metaph. meaning ‘“‘ perceive,” ‘‘ understand,” which alone is found in the NT, see P Cairo Zen I. 59061® (B.C. 257) συνίημι καὶ αὐτός, ἀλλὰ σὺ ἱκανὸς εἶ διοικῆσαι καὶ ἀποστεῖλαι ὡς ἀσφαλέστατα, where συνίημι takes the

συνίημι (suniēmi) — to understand. συνίημι, also ξυν-, 2nd pers. singular ξυνίης [ῑ] [Refs 5th c.BC+]; 3rd.pers. singular and plural συνίει, συνίουσι, [LXX]; imperative ξυνίει [Refs 8th c.BC+]; 3rd.pers. singular subjunctive συνιῇ [Refs 5th c.BC+]; infinitive συνιέναι, Epic dialect -ῑέμεν[LXX+8th c.BC+]; participle ξυνῑείς [LXX+5th c.BC+]: imperfect συνίην [Refs 3rd c.AD+]; συνίειν (assuming variant) [Refs 2nd c.AD+]; 3rd.pers. singular ξυνίει [Refs 5th c.BC+]; 3rd.pers. plural ξυνίεσαν [Refs 5th c.BC+], Epic dialect ξύνιεν [Refs 8th c.BC+]: future συνήσω [Refs 5th c.BC+]: aorist 1 συνῆκα [Refs 5th c.BC+]; Epic dialect ξυνέηκα [Refs 8th c.BC+]; but aorist 2 imperative ξύνες, [Refs 5th c.BC+]; plural σύνετε variant in [NT]; participle συνείς [Refs 5th c.BC+] and ; Aeolic dialect σύνεις [Refs 7th c.BC+]; Doric dialect infinitive συνέμεν [Refs 5th c.BC+]: perfect συνεῖκα [Refs 2nd c.BC+]; Doric dialect[Refs 1st c.AD+]; perfect participle συνεικώς probable reading in [Refs 8th c.BC+] we find of present, only imperative ξυνίει [Refs 8th c.BC+]; ofimperfect, 3rd.pers. plural ξύνιεν for ξυνίεσαν, [Refs 8th c.BC+]; of aorist 1, Epic dialect 3rd.pers. singular ξυνέηκ; of aorist 2, imperative ξύνες [Refs]; of aorist 2 middle, 3rd.pers. singular ξύνετο [Refs 8th c.BC+]; subjunctive 1st pers. plural συνώμεθα [Refs 8th c.BC+]; all except the last form with ξυν-, though seldom required by the verse. [As in ἵημι, the 1st pers. syllable is short in Epic dialect, long in Trag. and Comedy texts: [Refs 8th c.BC+] ξυνιημι in a dactylic verse, [Refs 5th c.BC+] ξυνιημι in an iambic trimeter, [Refs 4th c.BC+]

I. bring or set together, in hostile sense, τίς τ᾽ ἄρ σφωε.. ἔριδι ξυνέηκε μάχεσθα; [Refs 8th c.BC+]; but ἀμφοτέρῃς.. ἕνα ξυνέηκεν ὀϊστόν shot one arrow at both together, [Refs 5th c.AD+]

I.2. middle, come together, come to an agreement, ὄφρα.. συνώμεθα.. ἀμφὶ γάμῳ [Refs 8th c.BC+]

I.3. send herewith, [Refs 3rd c.BC+]

II. metaphorically, perceive, hear, frequently in [Refs 8th c.BC+] (who also has middle in this sense, ἀγορεύοντος ξύνετο [Refs 8th c.BC+]; καὶ κωφοῦ συνίημι Orac cited in [Refs 8th c.BC+]

II.2. to be aware of, take notice of, observe, τοῖιν [Refs 8th c.BC+]: with accusative, [Refs 5th c.BC+]: followed by a relative, ξύνες δὲ τήνδ᾽, ὡς.. χωρεῖ [Refs 6th c.BC+]

II.3. understand, ξ. ἀλλήλων understand one another's language, [Refs 5th c.BC+]; εὖ λέγοντος.. τοῦ Δελφικοῦ γράμματος οὐ σ. [Refs 5th c.BC+] to the intelligent, [Refs 6th c.BC+]; in Comedy texts dialogue, parenthetically, συνίη; like{μανθάνεις}; Latin tenes? [Refs 4th c.BC+]; οὐχὶ ξυνίη; [Refs 5th c.BC+]: also followed by a clause, οὐ ξυνιᾶσιν ὅκως.. [Refs 5th c.BC+]; σ. τὸ γράμμα ὃ βούλεται [Refs 5th c.BC+]: also, like other Verbs of perception, with participle, ξυνιᾶσι τιμώμενοι [Refs 3rd c.AD+]; οὐ συνίης καταναλίσκω; [Refs 1st c.AD+]