Just trivia: I imagine people on this site are invariably true stutterers. Cluttering is not as common even as stuttering. Cluttering does not have tension or avoidance behavior. And clutterers are much less likely to be concerned or seek help about their speech. (Though they sometimes do because others urge them to.). Often the clutterer has ADHD and does speak at a rapid rate—faster than they can formulate sentences and articulate them. They are more likely to have speech sound disorders and language formulation disorders—though that can co-occur the stutterers as well. Clutterers may use a lot of fillers like “um, um, like, like, like.” They generally are not reluctant to speak as a stutterer might be, however the listener may have trouble understanding what they say given the speech and relatively unclear rate.