Strong’s Greek
G115 — athetesis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀθέτησις
athetesis — pronounced ath-et'-ay-sis
from 114; cancellation (literally or figuratively):--disannulling, put away. see GREEK for 114
2 occurrences in the KJV.
Hebrews 7:18
For there is verily a disannulling of the commandment going before for the weakness and unprofitableness thereof.
Hebrews 9:26
For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.