noun

• (uncountable) Verbal controversy or disagreement; altercation; debate.
  "Addicted more / To contemplation and profound dispute."

verb

• (intransitive) to contend in argument; to argue against something maintained, upheld, or claimed, by another.
  ""Now, though thy thoughts are green and tender, as becometh one so young, yet are they those of a thinking brain, and in truth thou dost bring back to my mind certain of those old philosophers with whom in days bygone I have disputed at Athens, and at Becca in Arabia, for thou hast the same crabbed air and dusty look, as though thou hadst passed thy days in reading ill-writ Greek, and been stained dark with the grime of manuscripts.""
• (transitive) to make a subject of disputation; to argue pro and con; to discuss
  "Some residents disputed the proposal, saying it was based more on emotion than fact."
• (obsolete) to struggle against; to resist
  "Dispute it [grief] like a man."