Strong's #546: 'omnah (pronounced om-naw')

feminine form of 544 (in its usual sense); adverb, surely:--indeed.

Brown-Driver-Briggs Hebrew Lexicon:

'omnâh

1) verily, truly, indeed

Part of Speech: adverb

Relation: feminine form of H544 (in its usual sense)

Usage:

This word is used 3 times:

 

Genesis 20:12: "And yet indeed she is my sister; she is the daughter of my father, but not"
Joshua 7:20: "Joshua, and said, Indeed I have sinned against the LORD God"
2 Kings 19:17: " Of a truth, the kings of Assyria have destroyed the nations and their lands,"