Strong’s Greek
G1647 — elachistoteros
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐλάχιστος
elachistoteros — pronounced el-akh-is-tot'-er-os
comparative of 1646; far less:--less than the least. see GREEK for 1646
1 occurrence in the KJV.
Ephesians 3:8
Unto me, who am less than the least of all saints, is this grace given, that I should preach among the Gentiles the unsearchable riches of Christ;