Lexical Definition

‎συνεισέρχομαι‎ syneisérchomai (soon-ice-er'-khom-ahee) to enter with G:V
from ‎σύν‎ and ‎εἰσέρχομαι‎

go in with, go with into.

Usage: 4 forms in 5 verses
Form Translated As     In Verse(s)
συνεισῆλθεν he entered with John.18.15
went with John.6.22
συνεισελεύσεταί will he enter together with LXX.Job.22.4
συνεισέρχεσθαι to enter together LXX.Esth.2.13
συνεισέλθη should enter together LXX.Exod.21.3

Abbott-Smith

συν-εισ-έρχομαι [in LXX: Jb 22:4 (עִם בּוֹא), etc. ;]
to enter together: c. dat. pers., seq. εἰς, c. acc. loc., Jo 6:22 18:15.†

Abbott-Smith References

Book Refs
Job 22:4
John 6:22 · 18:15

Liddell-Scott-Jones

συνεισέρχομαι-έρχομαι,

enter along with or together, σοὶ δόμους [Refs 5th c.BC+]; ἐς οἴκους τινί[Refs 5th c.BC+]; εἰς τὴν οἰκίαν Mitteis [Refs 2nd c.AD+]; of things, [Refs 2nd c.AD+]