Strong's Number: 546
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Transliterated: 'omnah 
Phonetic: om-naw' 
Text:  feminine form of 544 (in its usual sense); adverb, surely:
KJV --indeed. 
This word was found 3 times in the Old Testament KJV Bible.
Genesis 20:12 | 
Exodus 14:3 | 
Judges 16:11 |