Lexical Definition

‎συναναμίγνυμι‎ synanamígnymi (soon-an-am-ig'-noo-mee) to associate with G:V
from ‎σύν‎ and a compound of ‎ἀνά‎ and ‎μίγνυμι‎

(have, keep) company (with).

Usage: 3 forms in 5 verses
Form Translated As     In Verse(s)
συνανεμίγνυτο is intermixed LXX.Hos.7.8
συναναμίγνυσθε intermingle LXX.Ezek.20.18
συναναμίγνυσθαι to associate with 1Cor.5.91Cor.5.11
to mix with 2Thess.3.14

Abbott-Smith

* συν-ανα-μίγνυμι (acc to Bl., 8, -μείγνυμι), [in LXX: Ho 7:8 A (בּלל hithpo.), Ez 20:18 A * ;]
to mix up together; pass., reflex, and metaph., to associate with (Plut., Ath., al.): I Co 5:9, 11, II Th 3:14 (v. M, Th., 117).†

Abbott-Smith References

Book Refs
Ezekiel 20:18
Hosea 7:8
1 Corinthians 5:9 · 5:11
2 Thessalonians 3:14

Liddell-Scott-Jones

συναναμίγνυμι-μείγνῡμι,

mix up together, [Refs 5th c.BC+]:—passive, with dative, [Refs 4th c.BC+]; associate with, τισι [NT+4th c.BC+]; of two bodies of men meeting, [Refs 1st c.AD+]; ἄνοια ξ. αὐτοῖς is part of their nature, [Refs 2nd c.AD+]

LSJ Scripture Refs: 1Cor.5.9