The word "arduini" is spelled with the letters "a-r-d-u-i-n-i." In terms of phonetics, it starts with the "a" sound, as in "apple," followed by the "r" sound, which is a voiced consonant pronounced by vibrating the vocal cords. The following "d" consonant is a voiced dental plosive sound, like the "d" in "dad." The "u" sound is an unrounded vowel, like the "u" in "cut." Finally, the word ends with the "i" sound, pronounced like the "ee" in "feet."