Countersuit

(redirected from countersue)
Also found in: Dictionary, Thesaurus, Legal, Wikipedia.
A civil suit initiated by a defendant to an action against the plaintiff or his attorney asserting that the original action was without reasonable or probable cause—i.e., ‘frivolous’—and motivated by malice—improper motive—or that the lawsuit ended in the favour of a physician who nonetheless suffered damage to his reputation, non-compensatory losses or other