Strong’s Greek
G558 — apeleutheros
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀπελεύθερος
apeleutheros — pronounced ap-el-yoo'-ther-os
from 575 and 1658; one freed away, i.e. a freedman:--freeman. see GREEK for 575 see GREEK for 1658
1 occurrence in the KJV.
1 Corinthians 7:22
For he that is called in the Lord, being a servant, is the Lord’s freeman: likewise also he that is called, being free, is Christ’s servant.