The voiceless labiodental nasal (stop) is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɱ̊⟩, a combination of the letter for the voiced labiodental nasal and a diacritic indicating voicelessness, in certain sources, the voicelessness diacritic can be found below ⟨ɱ̥⟩.^[1] The equivalent X-SAMPA symbol is F_0.

Features of the Voiceless labiodental nasal:

• It is a nasal consonant, which means air is allowed to escape through the nose, either exclusively (nasal stops) or in addition to through the mouth.
• Its place of articulation is labiodental, which means it is articulated with the lower lip and the upper teeth.
• Its phonation is voiceless, which means it is produced without vibrations of the vocal cords. In some languages the vocal cords are actively separated, so it is always voiceless; in others the cords are lax, so that it may take on the voicing of adjacent sounds.
• It is a central consonant, which means it is produced by directing the airstream along the center of the tongue, rather than to the sides.
• Its airstream mechanism is pulmonic, which means it is articulated by pushing air solely with the intercostal muscles and abdominal muscles, as in most sounds.

• Index of phonetics articles
• Voiced bilabial nasal

• List of languages with [ɱ̥] on PHOIBLE
• [ ɱ̊ ] unvoiced labial nasal stop (Video). Glossika Phonics. Retrieved 2023-12-06.