Vine's Expository Dictionary: View Entry
TDNT Reference: 7:600,1076
στενάζω stenázō, sten-ad'-zo; from G4728; to make (intransitively, be) in straits, i.e. (by implication) to sigh, murmur, pray inaudibly:—with grief, groan, grudge, sigh.
The KJV translates Strong's G4727 in the following manner: groan (3x), sigh (1x), with grief (1x), grudge (1x).
a sigh, to groan
Strong's Number G4727 matches the Greek στενάζω (stenazō),
which occurs 6 times in 6 verses
in the TR Greek.