[ð]→[l]Certainty: 5/5Commonality: 3/5

Oceanic Lambdacism Lateralization Iranian Uralic

Voiced dental fricative to Alveolar lateral approximant

The shift from the voiced dental fricative [ð] to the lateral approximant [l] is known as lambdacism (specifically lateralization). This change is phonetically natural as both sounds share a coronal place of articulation, and it often occurs as a stage in the lenition of dental stops.

Phonetic Effects

Lambdacism, Lateralization, Lenition

Language Examples

Pashto Iranian

Proto-Iranian *d→Pashto [l]— Historical development through a fricative stage: *d → *ð → l. This is a characteristic sound law in the evolution of Eastern Iranian languages.

Vitu (Muduapa) Oceanic

Proto-Oceanic *d→Vitu [ð] / [l]— Reflexes of Proto-Oceanic voiced coronals frequently fluctuate between dental fricatives and laterals across Western Oceanic varieties.

Hungarian (Historical) Uralic

Proto-Uralic *d→Hungarian [l]— Reconstructed *d likely passed through a dental fricative [ð] stage before stabilizing as [l] in Hungarian, parallel to shifts in other Uralic branches.

Related Transformations

Reverse D-to-L shift Alternative liquid shift

More Iranian Shifts

[b] → [v] — Spirantization [d] → [ð] — Spirantization [dz] → [l] — Deaffrication [g] → [ɟ] — Palatalization [k] → [∅] — Elision

Sources & References

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