**Question**: What is the difference between stutter and stammer? >*"The terms ‘stammer’ and ‘stutter’ are synonymous. Simply put, they both refer to the moments of dysfluency in a person’s speech and are often used interchangeably. In the UK, ‘stammer’ is the most common term used."* ([source](https://www.mabletherapy.com/blog/2021/06/21/whats-the-difference-between-a-stutter-and-a-stammer)) >*"The fact is, there are only two ways that these terms are different, one is the difference in the spelling of the word and the other is the region in which they are used. “Stammer” is a British term, whereas “stutter” is a North American term. At some point during the 1960s, stutter took over for stammer and since then has been used as the primary word to refer to an issue of speech fluency.* ([source](https://www.greatspeech.com/what-is-the-difference-between-stuttering-and-stammering/)) >*"There is no difference. The reason that both stutter and stammer exist and describe the same speech dysfluency is because stammer is a mostly British term, whereas stutter is largely used in the US, as well as New Zealand and Australia. There are only 2 ways in which stutter and stammer are different:* >*One is used predominantly by American English speakers, while the other is predominantly used by British English speakers.* >*One has two extra T’s and a U, while the other has two M’s and an A"* ([source](https://www.stuttering.co.nz/news/stuttering-vs-stammering-whats-the-difference/))