Lexical Definition

‎אֻמְנָם‎ ʼumnâm (oom-nawm') truly H:Adv
an orthographical variation of ‎אׇמְנָם‎

in (very) deed; of a surety.

1) verily, truly, indeed

Usage: 3 forms in 5 verses
Form Translated As     In Verse(s)
הַֽאֻמְנָ֗ם ¿ really Ps.58.1
הַֽאֻמְנָ֔ם ¿ really Num.22.371Kgs.8.272Chr.6.18
אֻמְנָ֛ם really Gen.18.13

Brown-Driver-Briggs

‎אֻמְנָם‎ adverb (from ‎אֹמֶן‎ by affix ‎ָ  ם‎) verily, truly, indeed, always in interrogative Gen 18:13 (J), elsewhere ‎הַאֻמְנָם‎ Num 22:37 (E) 1Kgs 8:27; 2Chr 6:18; Ps 58:2*.

Brown-Driver-Briggs References

Book Refs
Genesis 18:13
Numbers 22:37
1 Kings 8:27
2 Chronicles 6:18
Psalms 58:2*