| The lenition of stops between sonorants is a process that is relatively common cross-linguistically. |
| Initial glottalized sonorants are typically but not invariably pre-glottalized. |
| Whereas obstruents are frequently voiceless, sonorants are almost always voiced. |
| Voiced obstruents can stand only before vowels, sonorants and voiced obstruents in the same word. |
| If there were minimal pairs, we would have to conclude that voiced and voiceless sonorants are separate phonemes. |
| Old Irish had one of the most complex sonorant systems recorded in linguistics, with 12 coronal sonorants alone. |
