FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

eleutheros ἐλεύθερος — el-yoo'-ther-os — probably from the alternate of 2064; 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):--free (man, woman), at liberty.

see GREEK for 2064