Strong’s Greek
G4959 — sustenazo
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
συστενάζω
sustenazo — pronounced soos-ten-ad'-zo
from 4862 and 4727; to moan jointly, i.e. (figuratively) experience a common calamity:--groan together. see GREEK for 4862 see GREEK for 4727
1 occurrence in the KJV.
Romans 8:22
For we know that the whole creation groaneth and travaileth in pain together until now.