Hy-un-day
* Hy: Pronounced like the "high" in "high school," but with a slightly shorter vowel sound.
* un: Pronounced like the "un" in "sun" or "run."
* day: Pronounced like the "day" in "today."
It's important to note that the "y" at the end of "Hy" is pronounced as a consonant sound, similar to the "y" in "yes."