Brown-Driver-Briggs
מַעֲמַקִּים noun masculine plural depths; — absolute
׳מ Psalm 130:1 (figurative); construct literal
מַעֲמַקֵּייָֿם Isaiah 51:10; figurative
מַיִם ׳מ Ezekiel 27:34 (fall of Tyre),
Psalm 69:3;
Psalm 69:15 (distress).
I. עמר (√ of following; meaning dubious, perhaps related to Arabic
be abundant (of water), surpass, overtop; Late Hebrew עוֺמֶר, עָמִיר = Biblical Hebrew; ᵑ7 עָוּמְרָא, עֲמִירָא = Biblical Hebrew I. עֹמֶר).