Strongs: G421
G421 @ ἀνεξιχνίαστος anexichniastos an-ex-ikh-nee'-as-tos From G1 (as a negative particle) and a presumed derivative of a compound of G1537 and a derivative of G2487 not tracked out that is (by implication) untraceable: - past finding out unsearchable.
Romans:11:33
Ephesians:3:8