roughshod (

     adj 1: (of a horse) having horseshoes with projecting nails to
            prevent slipping
     2: (of persons or their actions) able or disposed to inflict
        pain or suffering; "a barbarous crime"; "brutal beatings";
        "cruel tortures"; "Stalin's roughshod treatment of the
        kulaks"; "a savage slap"; "vicious kicks" [syn: barbarous,
         brutal, cruel, fell, savage, vicious]
     3: unjustly domineering; "incensed at the government's
        heavy-handed economic economic policies"; "a manager who
        rode roughshod over all opposition" [syn: heavy-handed]