ἀνεξιχνίαστοςanexichníastos
GreekG4212 occurrences (KJV)
not tracked out, i.e. (by implication) untraceable
KJV renders it: past finding out; unsearchable
Where it appears
Lexical data: Strong’s Hebrew & Greek Dictionaries (1890, public domain; openscriptures, CC-BY-SA). Word tagging from the Strong’s-numbered KJV.