To call into question; to oppose.
To strive earnestly to hold or maintain; to struggle to defend.
To make a subject of litigation; to defend, as a suit; to dispute or resist, as a claim, by course of law.
To contend.
Controversy; debate.
Struggle for superiority; combat.
A competition.
To contradict or controvert; to oppose; to challenge or question the truth or validity of a given statement.