vicious vs roughshod

vicious and roughshod both are adjectives.

Word	Noun	Adjective	Verb	Adverb
vicious	No	Yes	No	No
roughshod	No	Yes	No	No

As adjectives, vicious and roughshod are synonyms defined as:

vicious and roughshod: (of persons or their actions) able or disposed to inflict pain or suffering

Other synonyms of vicious include barbarous, brutal, cruel, fell, savage.

vicious (adjective)	roughshod (adjective)
(of persons or their actions) able or disposed to inflict pain or suffering	unjustly domineering
marked by deep ill will; deliberately harmful	(of persons or their actions) able or disposed to inflict pain or suffering
having the nature of vice	(of a horse) having horseshoes with projecting nails to prevent slipping
bringing or deserving severe rebuke or censure