My close ones know, but the people I work with or those I rarely talk to don’t know. I wouldn’t say I’m hiding it but mostly I just don't know how to bring it up so I mask it. Although, in my experience, it’s easier for both me and the people around me if they know I have a stutter. It’s always been something that just 'hangs' in the air, and I notice that people don’t know how to react if I get stuck. I feel that if I tell people right away, there’s a much lower chance of an awkward situation, and at least they won’t think I’m dumb because my stutter isn’t the classic stutter that people know and expect to hear (repetition of syllables, making faces), but rather occasional strong blocks after which I completely change the structure of the sentence, so people probably most often think that I just don’t know how to speak properly.