From Hadar and ezer; Hadar (i.e. Hadad, Hadad) is his help; Hadarezer (i.e. Hadadezer, Hadad'ezer), a Syrian king -- Hadarezer.
see HEBREW Hadar
see HEBREW ezer
see HEBREW Hadad
see HEBREW Hadad'ezer
H1928. Hadarezer
הֲדַרְעֶ֫זֶר proper name, masculine a king of Aram (צוֺבָה) defeated by David 2 Samuel 10:16 (twice in verse); 10:19 = 1 Chronicles 19:16, 19; also 18:3, 5, 8, 9, 10 & הֲדַרְעָ֑זֶר 18:7; 18:10; all erroneous for הֲדַדְעֶזֶד (q. v.), although ᵐ5 throughout Ἁδρααζαρ.