scurillous

Adjective

scurrilous (comparative more scurrilous, superlative most scurrilous)

1. Of a person, given to vulgar verbal abuse; foul-mouthed.
2. Coarse, vulgar, or abusive.
3. Slanderous.
   • She said Johnson was “a better man than many of your detractors will ever understand”, adding that it was “so desperately sad that you let yourself down by making a scurrilous accusation against the leader of the opposition”.2022 February 3, Heather Stewart, quoting Munira Mirza, “Boris Johnson’s policy chief quits over PM’s ‘scurrilous’ Savile remark”, in The Guardian
4. Gross, vulgar.
5. Unscrupulous, evil.
   • We have had our address used by scurrilous crooks in the past to gain assets by fraud.