Strong’s Greek
G524 — apalgeo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀπαλγέω
apalgeo — pronounced ap-alg-eh'-o
from 575 and algeo (to smart); to grieve out, i.e. become apathetic:--be past feeling. see GREEK for 575
1 occurrence in the KJV.
Ephesians 4:19
Who being past feeling have given themselves over unto lasciviousness, to work all uncleanness with greediness.