roughshod
1. [ adjective ] (of persons or their actions) able or disposed to inflict pain or suffering
Synonyms: savage vicious cruel brutal fell barbarous
Examples:

"a barbarous crime" "brutal beatings" "cruel tortures" "Stalin's roughshod treatment of the kulaks" "a savage slap" "vicious kicks"

Related terms: inhumane
2. [ adjective ] (of a horse) having horseshoes with projecting nails to prevent slipping
Related terms: shod
3. [ adjective ] unjustly domineering
Synonyms: heavy-handed
Examples:

"incensed at the government's heavy-handed economic policies" "a manager who rode roughshod over all opposition"

Related terms: domineering