I have found some words for pleasant sounding words, such as mellifluous and phonoaesthetics. However I am seeking a word, either in English or any other language, that means the feel of a word as it is being spoken. The closest I can get is mouthfeel, or phrases such as rolls off the tongue or feels good to say.
There doesn't appear to be a word for this yet, but there are several that come close (most info from waywordradio.org/mouthfeel-of-words)
Mouthfeel has been used with the comparison to wine tasting, using to describe a nice taste to the mouth, like rounded or velvety. The words feel good to say as well, whereas words like moist (the most hated word in the English language), jowls, and phlegm feel uncomfortable for most people.
sonicky (from Ray Blount Jr. in his book Alphabet Juice) is the word used for the feeling we have when words are spoken, but it also ties in the meaning of the word as well; words come from our mouth with a quality of the way we should feel about them, like fuzzy or sleek
Sprachgefuhl: an intuitive sense of what is linguistically appropriate (languagefeel)
Finally, there is synesthesia (first use 1891): a concomitant sensation and especially a subjective sensation other than the one (as of sound) being stimulated; the condition marked by the experience of such sensations (e.g. the feeling of a sound) (more here)
Meaning may be transferred from one sensory faculty to another (synesthesia), as when we say sweet, with primary reference to taste, but extend it to hearing (sweet music), smell ("The rose smells sweet"), and to all senses at once (a sweet person). Sharp may be transferred from feeling to taste, and so may smooth. Warm may shift its usual reference from feeling to sight, as in warm colors, and along with cold may refer in a general way to all senses, as in a warm (cold) welcome." (John Algeo and Thomas Pyles, The Origins and Development of the English Language, 5th ed. Thompson, 2005)