Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb litigate

2 senses of litigate

Sense 1
litigate -- (engage in legal proceedings)
       => challenge -- (issue a challenge to; "Fischer challenged Spassky to a match")

Sense 2
action, sue, litigate, process -- (institute legal proceedings against; file a suit against; "He was warned that the district attorney would process him"; "She actioned the company for discrimination")
       => challenge -- (issue a challenge to; "Fischer challenged Spassky to a match")