From 'adown and tsedeq; lord of justice; Adoni-Tsedek, a Canaanitish king -- Adonizedec.
see HEBREW 'adown
see HEBREW tsedeq
H139. Adoni
-tsedeq אֲדֹנִיצֶֿ֫דֶק proper name, masculine Canaanite king of Jerusalem Joshua 10:1, 3(Lord of righteousness; my lord is righteous, or my Lord is ‚idiq — divine name — compare אֲדֹנִיָּהוּ צֶדֶק, מַלְכִּי, Phoenician אדנבעל etc.)