rancorous

adj

1. Full of rancor; bitter; unforgiving.

   “rancorous speech”

   “Despite its attempt to provide what it saw as sober current-affairs programming in a sea of often-rancorous cable news channels, and winning some top awards in journalism, Al Jazeera America was unable to build an audience—it reached about 60 million households, compared to 100 million for other cable broadcasters—or draw advertisers.”