companion in labour, (fellow-)helper(-labourer, -worker), labourer together with, workfellow

Strong’s Dictionary of Greek Words:

Number:
4904 (find all occurrences in KJV Bible)
Greek:
συνεργός
Transliteration:
sunergos
Phonic:
soon-er-gos’
Meaning:
from a presumed compound of 4862 and the base of 2041; a co-laborer, i.e. coadjutor
KJV Usage:
companion in labour, (fellow-)helper(-labourer, -worker), labourer together with, workfellow