Vine's Expository Dictionary: View Entry
ἐμβριμάομαι embrimáomai, em-brim-ah'-om-ahee; from G1722 and βριμάομαι brimáomai (to snort with anger); to have indignation on, i.e. (transitively) to blame, (intransitively) to sigh with chagrin, (specially) to sternly enjoin:—straitly charge, groan, murmur against.
The KJV translates Strong's G1690 in the following manner: straitly charge (2x), groan (2x), murmur against (1x).
to charge with earnest admonition, sternly to charge, threatened to enjoin
Strong's Number G1690 matches the Greek ἐμβριμάομαι (embrimaomai),
which occurs 5 times in 5 verses
in the TR Greek.