Abbott-Smith Manual Greek Lexicon
σύν-δουλος (G4889)
10 σύν-δουλος , -ου, ὁ [in LXX: Es 4:7 , 9 , 17 , 23 5:3 , 6 6:6 , 13 ( כְּנָת ) * ;] a fellow-servant : Mt 18:28-33 24:49 ; of servants of the same divine Lord, Col 1:7 4:7 , Re 6:11 ; so of angels, Re 19:10 22:9 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain