Even w/o the stutter, there's still the fear of being ignored, mocked, say something misunderstood, clumsy or wrong, the fear of being the center of attention when you talk, the fear of giving a bad advice, a bad joke, a bad presentation... I may have a stutter, but I had the chance of being most of the time with comprehensive people about it (even if some people still laughed at me about me and interrupted me a lot. A few people too were pissed of by my stutter but I can count them on the fingers of one's hand). So even at my worst, it was never really this who got me anxious. It was the times I couldn't comfort someone cause I didn't know how to react, where I isolated myself during parties cause I couldn't follow the other jokes without seeming un-natural. I was ( and still am) afraid to dance cause I fear judgement for dancing "wrong". I don't talk to new people cause I am scared I wouldn't fit in their group, bother them all or being the "uninvinted". Of course my stutter contributes too to my anxiety, cause I'm afraid or breaking "the conversation flow" when I talk in a group discussion (everyone laughing and talking quickly a few second ago stops to look at you in silent trying to get the words out of your mouth), or cause I'm afraid of the reaction of an unknow person when I try to talk to them, but most of the time I was more scared of not finding the right words to tell than telling them wrong.