scurrilous

adjective5

1. •
   Of a person, given to vulgar verbal abuse; foul-mouthed.
2. •
   Coarse, vulgar, or abusive.
3. •
   Gross, vulgar.
4. •
   Slanderous.
5. •
   Unscrupulous, evil.

   • We have had our address used by scurrilous crooks in the past to gain assets by fraud.