I have a very Socratic approach - I pummel the designers with questions, so when I get them to step back from the work and look at it with me, they'll eventually see what I see, coming to it fresh and unencumbered. That's always very gratifying because they feel a responsibility and an ownership of a solution.
When it comes to my vocabulary, I felt a responsibility when I was teaching to raise the bar of conversation in my classroom. And with my own students, I refused to let them use the phrase "I like" or "I don't like" when we were engaged in a critique.
I would never dream of telling people how to dress. but I do say to them, however you are dressing, accept responsibility for it. And also, unless asked, I don't judge. And if asked to judge - I would approach it socratically, I would approach it with questions.