Voiceless bilabially post-trilled dental stop

The voiceless bilabially post-trilled dental stop is a type of consonant. It has only been found in a few languages: Oro Win and the Wariʼ language in South America and Sangtam in Northeast India. This makes it a very rare sound. The letter in the International Phonetic Alphabet for sound is ⟨t̪ʙ̥⟩. The X-SAMPA symbol for this sound is t_dB\_0.

Voiceless bilabially post-trilled dental stop
t̪ʙ̥
Encoding
X-SAMPA	t_dB\_0

Features

Features of the voiceless bilabially post-trilled dental stop:

• The manner of articulation (how the sound is produced) is trill. This means that this sound is produced by directing air over the articulator so that it vibrates.
• The phonation is voiceless. This means that this sound 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 an oral consonant. This means that air is allowed to escape through the mouth only.
• The airstream mechanism is pulmonic. This means that this sound is produced by pushing air solely with the lungs and diaphragm, as in most sounds.
• It has two places of articulation:
  • The stop is dental. This means that this sound is produced with the tongue at the upper teeth, the lower teeth, or both the upper teeth and the lower teeth. (Many stops and liquids that are called dental consonants are actually denti-alveolar consonants.)
  • The trill is bilabial. This means that this sound is produced with both lips.

Occurrence

Language		Word	IPA	Meaning	Notes
Wari'			[t͡ʙ̥ot͡ʙ̥o]	'to be pleasant'	Forms a minimal pair with [toto], which means 'to paint'. (A minimal pair means that two words are only different because of one sound.)