a perversion, that which is perverted or warped, perverted
Full Brown-Driver-Briggs lexicon entry
מֻטֶּהnoun [masculine]that which is perverted, justice (see √ Hiph`il 3 g); — only ׳וְהָעִיר מָֽלְאָה מEzek 9:9 (as above Ke Sm Da Berthol Toy RV > perverseness AV) > Co חָמָס (as Ezek 7:23).