This is the 4732nd most frequent German word.
widersprechen
To contradict or oppose.
In this sentence, 'widersprechen' is used to indicate disagreeing with someone's opinion.
Ich muss deiner Meinung widersprechen, da ich andere Erfahrungen gemacht habe.
I must contradict your opinion as I have had different experiences.
Here, 'widersprechen' illustrates something being in conflict with established rules.
Das Verhalten des Kindes widerspricht den Regeln des Spiels.
The child's behavior contradicts the rules of the game.
This usage shows 'widersprechen' as expressing disagreement with someone, here chosen not to be voiced.