"Your maidservant had two sons, but the two of them struggled together in the field, and there was no one to separate them, so one struck the other and killed him.
Strong's Concordance
Original word: ἀκροβυστία
Transliteration: akrobustia
Definition (short): uncircumcised
Definition (full): the prepuce, foreskin, uncircumcision
NAS Exhaustive Concordance
Word Origin: of uncertain origin
Definition: the prepuce, foreskin, hence uncircumcision
NASB Translation: uncircumcised (10), uncircumcised man (1), uncircumcision (8), without being circumcised (1).
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.
KJV: For circumcision verily profiteth, if thou keep the law: but if thou be a breaker of the law, thy circumcision is made uncircumcision.
NASB: For indeed circumcision is of value if you practice the Law; but if you are a transgressor of the Law, your circumcision has become uncircumcision.