Strong’s Greek
G24 — aganaktesis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀγανάκτησις
aganaktesis — pronounced ag-an-ak'-tay-sis
from 23; indignation:--indignation. see GREEK for 23
1 occurrence in the KJV.
2 Corinthians 7:11
For behold this selfsame thing, that ye sorrowed after a godly sort, what carefulness it wrought in you, yea, what clearing of yourselves, yea, what indignation, yea, what fear, yea, what vehement desire, yea, what zeal, yea, what revenge! In all things ye have approved yourselves to be clear in this matter.