Greek word
eleútheros
ἐλεύθερος
What it means
unrestrained, i.e. not a slave, or exempt
unrestrained (to go at pleasure), i.e. (as a citizen) not a slave (whether freeborn or manumitted), or (genitive case) exempt (from obligation or liability)
Where it comes from
probably from the alternate of érchomai (ἔρχομαι)