Lexical Definition

‎συμβασιλεύω‎ symbasileúō (soom-bas-il-yoo'-o) to reign with ^G:V
from ‎σύν‎ and ‎βασιλεύω‎

reign with.

• to be co-regent (figuratively)

Abbott-Smith

συμ-βουλεύω [in LXX chiefly for יעץ ;]
1. to advise, counsel: c. dat. pers., Jo 18:14; id. seq. inf., Re 3:18.
2. Mid., to take counsel, consult: seq. ἵνα, Mt 26:4 ("reciprocal middle," v. M, Pr., 157); c. inf., Ac 9:23.†

Abbott-Smith References

Liddell-Scott-Jones

συμβασιλεύω-εύω,

rule, reign together with, τινι [NT+2nd c.BC+]

_{LSJ Scripture Refs: 1Cor.4.8 ☩ 2Tim.2.12}