contest

transitive verb | \ kən-ˈtest \ | con·test
  1. : to dispute or challenge through legal procedures contest a will

contest

noun | \ ˈkän-ˌtest \ | con·test
  1. : a challenge brought through formal or legal procedures boundary controversies or other contests between states —Felix Frankfurter specifically : will contest — see also no contest clause : will contest — see also no contest clause