σύνειμι fut. έσομαι εἰμί sum to be with, be joined or linked with a thing, c. dat., Od.; periphr. for a simple Verb, σ. ὀνείρασιν to dream, Aesch.; σ. νόσῳ νοσεῖν, Soph.; κακοῖς πολλοῖς ξ. to be acquainted with miseries, Soph.; σ. πράγμασι to be engaged in business, Ar.; σ. ἡδοναῖς, λύπαις, δείμασι Plat.;—reversely, ἐμοὶ ξύνεστιν ἐλπίς Eur.; and absol., ἆται ἀεὶ ξυνοῦσαι Soph.; ὁ χρόνος ξυνὼν μακρός Soph. to have intercourse with a person, live with, τινι Soph., Eur., etc.; μετά τινος Ar. to live with a husband, = συνοικέω, Hdt. to attend, as to a pupil attends a master, Xen., etc.; of the teacher, Xen.:— οἱ συνόντες associates, disciples, partisans, Plat. to have dealings with, τινι Thuc.; σ. ἵπποις to have to do with them, Plat. to take part with, τινι Aesch., etc.