Vine's Expository Dictionary: View Entry
ἀγανακτέω aganaktéō, ag-an-ak-teh'-o; from ἄγαν ágan (much) and ἄχθος áchthos (grief; akin to the base of G43); to be greatly afflicted, i.e. (figuratively) indignant:—be much (sore) displeased, have (be moved with, with) indignation.
The KJV translates Strong's G23 in the following manner: have indignation (2x), be much displeased (2x), with indignation (2x), be sore displeased (1x).
to be indignant, moved with indignation, be very displeased
Strong's Number G23 matches the Greek ἀγανακτέω (aganakteō),
which occurs 7 times in 7 verses
in the TR Greek.