Voiced linguolabial lateral approximant

The voiced linguolabial lateral approximant is a type of consonantal sound common in speech disorders. The IPA doesn’t have a dedicated symbol, but the extIPA uses the diacritic combination ⟨l̼⟩.^[1]

Although the linguolabial laterals are possible, which is labial, and coronal at the same time, bilabial and labiodental ones are not because lateral consonants need the tongue, which is coronal and a few other places, and bilabial and labiodental are just labial (the lips).

The extIPA has this consonant.^[1]

This consonant is one of the linguolabials.^[2]

• Its manner of articulation is approximant, which means it is produced by narrowing the vocal tract at the place of articulation, but not enough to produce a turbulent airstream.
• Its place of articulation is linguolabial, which means it is articulated with the tongue against the upper lip.
• Its phonation is voiced, which means the vocal cords vibrate during the articulation.
• It is an oral consonant, which means that air is exclusively allowed to escape through the mouth.

• It is a lateral consonant, which means it is produced by directing the airstream over the sides of the tongue, rather than down the middle.
• 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.