When in doubt, don't do it. In politics and high school or college competitions, debates are formal. Dialogue A discussion between at least two people. This should not be confused with a duologue, which is a dialogue between exactly two people. Double-talk Deceiving or inaccurate language.
Salespeople often use double-talk to help make their sales.
Learn to sort out the truth from the lies before going to buy a car or you may get double-talked into a bad deal. Editorialize To express an opinion strongly, often in writing. Expostulate To use reason in an attempt to change someone's mind. In more general terms it can also mean to discuss something in depth. The gift of gab is the ability to talk about anything.