swear

Strong’s Dictionary of Greek Words:

Number:
3660 (find all occurrences in KJV Bible)
Greek:
ὀμνύω
Transliteration:
omnuo
Phonic:
om-noo’-o
Meaning:
but obsolete ὀμόω (om-o'-o) is used in certain tenses; to swear, i.e. take (or declare on) oath
KJV Usage:
swear