Strong’s Greek
G379 — anapologetos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀναπολόγητος
anapologetos — pronounced an-ap-ol-og'-ay-tos
from 1 (as a negative particle) and a presumed derivative of 626; indefensible:--without an excuse, inexcusable. see GREEK for 1 see GREEK for 626
2 occurrences in the KJV.
Romans 1:20
For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:
Romans 2:1
Therefore thou art inexcusable, O man, whosoever thou art that judgest: for wherein thou judgest another, thou condemnest thyself; for thou that judgest doest the same things.