Yes, of course I try to hide my stutter. In many situations it works out well. I've had co-workers that I talk to nearly every day that have no clue I stutter. Yet, I have clients that I barely speak a few sentences with once a week that definitely know I stutter. Like other people here have said, I often substitute a word for something that I know I'll stutter on. For example, I have a real tough time saying "dinner," so I'll substitute it with "supper," which is definitely a more awkward way of saying it. Sometimes my word substitution leads to awkward and convoluted ways of saying what otherwise would be very simple things. As regards to the "uhmmm" thing... do what works for you, but I don't think I would recommend it myself. When I stutter I'm so paralyzed that I can't even sound out an "uhmm" usually. When I do stutter, I know there's nothing I can do to hide it. Just go along with it and try to power through the words. In my experience, that's the only way you'll develop confidence in speaking, despite the lack of fluency. Being a stutterer is something you can try to hide, but a stutter itself is not something you should try to mask. And also, a lot of people think stuttering itself is a sign of a lack of intelligence. No reason to exacerbate it by trying to mask it in ineffective ways like saying "uhmm" to bide the time. Getting to the level that you're confident with your stutter will really be the only solution.