Noun
a suit brought against someone who has sued you
Source: WordNetAfter Tool filed a countersuit stating that Volcano had failed to use a renewal option in their contract, the parties settled out of court. Source: Internet
It was a reporter at a local law magazine, asking for comment on a new countersuit filed by Keith Davidson, Daniels’s former lawyer, who was claiming Avenatti and Daniels had defamed him. Source: Internet
Johnson (1993), 16. Adams filed a countersuit, claiming the case was in poor taste and frivolous, and that, as author of the Nancy Drew series, she retained the rights to her work. Source: Internet
Tripp further addresses this particular incident in his countersuit. Source: Internet