say it: RUHF-shahd
roughshod is an adjective meaning "(of a horse) having horseshoes with projecting nails to prevent slipping". It carries 3 recorded senses.
(of a horse) having horseshoes with projecting nails to prevent slipping
unjustly domineering
“incensed at the government's heavy-handed economic policies”
“a manager who rode roughshod over all opposition”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for roughshod come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.