Strong's G558 — ἀπελεύθερος (noun)
apeleutheros (ap-el-yoo'-ther-os) n.
1. one freed away, i.e. a freedman
[from G575 and G1658]
KJV: freeman 
Root(s): G575, G1658 
Hebrew root: ἐλεύθερος
Occurrences: 1