Phrygian phonology

It has long been claimed that Phrygian exhibits a Lautverschiebung of stop consonants, similar to Grimm's Law in Germanic and, more to the point, sound laws found in Proto-Armenian, i. e. voicing of PIE aspirates, devoicing of PIE voiced stops and aspiration of voiceless stops. This hypothesis has been rejected by Lejeune (1979) and Brixhe (1984).

The hypothesis had been considered defunct throughout the 1980s and 1990s, but has been revived in the 2000s, with Woodhouse (2006) and Lubotsky (2004) arguing for evidence for at least partial shift of obstruent series, i.e. voicing of PIE aspirates (*bh > b) and devoicing of PIE voiced stops (*d > t).

The affricates ts and dz developed from velars before front vowels.