Strong’s Greek
G419 — anexereunetos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀνεξεραύνητος
anexereunetos — pronounced an-ex-er-yoo'-nay-tos
from 1 (as a negative particle) and a presumed derivative of 1830; not searched out, i.e. (by implication) inscrutable:--unsearchable. see GREEK for 1 see GREEK for 1830
1 occurrence in the KJV.
Romans 11:33
O the depth of the riches both of the wisdom and knowledge of God! how unsearchable are his judgments, and his ways past finding out!