σύνεσις
ἤκουσεν ἐν Ῥώμῃ καὶ ἀρσένων ἑταιρίαν εἶναι → he heard that there was also a fellowship of males in Rome (Severius, commentary on Romans 1:27)
English (LSJ)
Att. ξύνεσις, εως, ἡ, (συνίημι)
A uniting, union, πέτρη τε ξύνεσίς τε δύω ποταμῶν Od.10.515 (with ξυν- metri gr.). 2 metaph., with allusion to foreg. signf. and signf. 11, χωρὶς ἕκαστος εἰς τὸ φρονεῖν ἀσθενής, συμβάλλων δὲ εἰς ἓν πᾶς ἐν τῇ συνόδῳ καὶ τῇ ὡς ἀληθῶς συνέσει τὸ φρονεῖν ἐγέννησε καὶ εὗρε Plot.6.5.10. II faculty of quick comprehension, mother-wit, sagacity, Democr.77, Th.2.62, 3.82, etc.; οἰκείᾳ ξυνέσει Id.1.138, cf. Pl.Cra.412a, Phlb. 19d, Arist.EN1143a17, D.18.127, Ev.Luc.2.47, Gal.6.457, etc.; hence of animals, ὃ [ζῷον] συνέσει . . ὑπερέχει τῶν ἄλλων Pl.Mx. 237d:—Phrases, ὅστις γε σύνεσιν ἔχει Hdt.2.5, 7.49; ἀρκεῖν ξυνέσει E.Tr.674; ξ. καὶ σοφία Id.HF655 (lyr.); φρόνησίς τε καὶ ξ. Pl. Cra.411a; σ. λαβεῖν, of children, Arist.EN1161b26; μοῖραν ἔχειν συνέσεως ( αἰσθήσεως) Democr. ap. Thphr.Sens.71; also with qualifying words added, σ. φρενῶν Pi.N.7.60; γνώμης ξ. Th.1.75; σ. πολιτική Arist.Pol.1291a28; ἡ περὶ τὴν διάνοιαν σ. Id.HA588a23; ἡ ὑμετέρα σ. as form of address, Sammelb.7433.6 (v A.D.). 2 c. gen. objecti, intelligence in a thing, sagacity in respect to it, Pl.Cra. 412c, D.S.1.1; περὶ τῶν παρόντων Th.2.97. III conscience = συνείδησις, ἡ σ. (sc. μ' ἀπόλλυσι) · ὅτι σύνοιδα δείν' εἰργασμένος E.Or. 396, cf. Men.632, Plb.18.43.13. IV a branch of art or science, οἱ περὶ τὴν σ. ταύτην, i.e. music, Arist.Pol.1342b8. b knowledge, opp. ἄγνοια, Id.de An.410b3. V decision, decree, IG5(1).1390.112 (Andania, i B.C.). (Plato (Cra.412a) derives σύνεσις 11 from συνιέναι (σύνειμι) come together, neglecting the unwritten aspiration (συνἱέναι); but the form and signfs. point to συνίημι 11, perceive, apprehend, cf. Arist.EN1143a17.)
