#rhotacism

Grimm’s Law was highly successful at predicting the forms of Germanic words but there were many exceptions. However, the discovery of Verner’s Law showed that exceptions might just be apparent; sound change is still ‘regular and exceptionless’, you just have to look a bit closer for the regularities.

An example of one such ‘exception’ is father, from above.

Note how Latin pater (which retains the /p/ and /t/ from PIE) shows up as father in English. IE /p/ > Gmc /f/ as predicted by Grimm’s Law, but IE /t/ has not come out as /θ/ instead we find /ð/. More telling are examples of related words which have the predicted sound in some cases but not in others! For example, English birthandburden are both related but show different outcomes of what was historically the same consonant.

Karl Verner noticed, however, that the unpredictable instances correlated with the position of accent in PIE. Sanskrit retains much of the earlier accent system which Germanic has subsequently changed. Sanskrit pater retains the accent following the /t/. Verner noticed that Germanic results from Law A were voiced unless they were immediately preceded by an accented syllable (in which case they would be voiceless) – this is Verner’s Law. Subsequently many of these Germanic voiced fricatives became voiced stops (thus leading to birthandburden). Germanic also underwent an Accent Shift whereby the position of accent changed. This annihilated the conditions for Verner’s Law but left the results of it unchanged, i.e. the results went from being conditioned and predictable (phonetic) to unconditioned and unpredictable (phonemic).

Verner’s Law also helped to explain cases of /s/-/r/ alternations, so called rhotacism. That is /s/ was pronounced as [z] by Verner’s Law unless preceded by accent. This [z] sound then underwent rhotacism to become /r/. Old Latin shows flos-floris‘flower’, English shows was-were etc. Many of the results of Verner’s Law have, however, been lost through analogical levelling. Latin underwent levelling to yield flor-floris‘flower’ and many English dialects have levelled the was-wereparadigm (as has Modern German), i.e. you might hear people saying ‘we was, you was, they was’.

Verner’s Law was and is a fantastic example of how powerful the comparative method is when applied carefully and rigorously. It also gave a great confidence boost to the Neogrammarian Hypothesis which says that sound change is regular and exceptionless. But that is not the end of Verner’s Law…it’s still around in places. When you next come across execute and executor/executive, think carefully about where the stress falls and how you are pronouncing the <x> in those cases – you might just see Verner’s Law in action!