Scurrilous is a formal adjective that most often describes language that contains obscenities, abuse, or, especially, slander—that is, a false statement that damages a person’s reputation. Scurrilous can also describe someone who uses or tends to use scurrilous language, or it can describe a person or thing as evil or vulgar.
using or given to coarse language, vulgar and evil
Making or spreading scandalous claims about someone with the intention of damaging their reputation
Humorously insulting
using or given to coarse language [adj SCURRILOUSLY]