What’s the origin/etymology of “mm-bye”? - slang
https://english.stackexchange.com/questions/542103/what-s-the-origin-etymology-of-mm-bye
WEBJul 28, 2020 · Regarding the symbolism of "hmm," Anatoly Liberman said: The first h-sound is simply a substitute for breath, and the second m-sound, since the mouth is closed, is …
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