You can be completely right about something and still lose the argument because of how you presented it. You can have the best idea in the room and watch it get ignored because you wrapped it in words that signaled weakness. The content of what you say matters, but the frame you put around it determines whether people actually listen. Certain words and phrases act as credibility destroyers. They telegraph uncertainty, defensiveness, or lack of conviction so strongly that everything else you say gets discounted. These are not complex rhetorical errors. They are simple verbal tics that most people use...