Vine's Expository Dictionary: View Entry
TDNT Reference: 2:261,182
σύνδουλος sýndoulos, soon'-doo-los; from G4862 and G1401; a co-slave, i.e. servitor or ministrant of the same master (human or divine):—fellowservant.
The KJV translates Strong's G4889 in the following manner: fellowservant (10x).
a fellow servant, one who serves the same master with another
the associate of a servant (or slave)
one who with others serves (ministers to) a king
a colleague of one who is Christ's servant in publishing the gospel
one who with others acknowledges the same Lord, Jesus, and obeys his commands
one who with others is subject to the same divine authority in the Messianic economy
of angels as the fellow servants of Christians
Strong's Number G4889 matches the Greek σύνδουλος (syndoulos),
which occurs 10 times in 10 verses
in the TR Greek.