1.  Mū is the twelth eleventh letter in the Greek alphabet.

2.  Mū's phoneme sounds like the "m" as in "man."

3.  Mū is a voiced nasal labial. It is also considered as a continuant consonant. Its phoneme is formed by the rounding of the lips and most of the sound allowed to pass through the nasal cavity instead of the mouth. Since the consonant is voiced, the vocal cords vibrate while saying the phoneme. You can test this by putting your fingers on your vocal cords and practice saying it.

4.  Mū's capital letter is written exactly like the English "M." The lower case letter has a tail which distinguishes it from upsīlon.

5.  Mū is transliterated into English as "M" or "m."