argue,debate,dispute

都含“辩论”的意思。

argue 着重“说理”、“论证”和“企图说服”, 如:
I argued with her for a long time, but she refused to listen to reason. 
我和她辩论了好久, 但她还是不听。

debate 着重“双方各述己见”, 内含“交锋”的意思, 如:
We have been debating about the issue. 我们一直在就这个问题进行辩论。

dispute 指“激烈争辩”, 含有“相持不下”或“未得解决”之意,如:
Whether he will be elected as chairman is still disputed.他是否当选为主席, 仍然有争论。