From akron and probably a modified form of posthe (the penis or male sexual organ); the prepuce; by implication, an uncircumcised (i.e. Gentile, figuratively, unregenerate) state or person -- not circumcised, uncircumcised (with echo), uncircumcision.
see GREEK akron
see GREEK echo
ἀκροβυστία (akrobustia) − 15 Occurrences
ἀκροβυστίαν (akrobustian) − 3 Occurrences
ἀκροβυστίας (akrobustias) − 3 Occurrences