Proto-Celtic The common religious vocabulary between Celtic and Germanic languages suggests that speakers of Proto-Germanic and
Proto-Celtic were in close contact in ancient times and likely shared some of their beliefs. This connection likely dates back even further to interactions between
Pre-Germanic and Celtic languages, as shown by some cognates that do not exhibit the effects of
Grimm's Law, which is usually dated to around 500 BCE. Historian
John T. Koch argues that Pre-Germanic and Pre-Celtic languages remained in close contact from 1800 to between 1200 and 900 BCE, partly due to the long-distance metal trade with Scandinavia. A few of these terms can be identified as Celtic loanwords that entered the Germanic languages between 900 and 500 BCE, after the sound changes in Proto-Celtic had been completed, but before the emergence of Grimm's Law in Proto-Germanic.
Baltic and Slavic The relationship between Proto-Germanic speakers and those of Proto-Baltic and Proto-Slavic is unclear.
Frederik Kortlandt argues that because a substantial portion of the vocabulary shared between Germanic and
Balto-Slavic was borrowed after the Baltic–Slavic split, Germanic and
Proto-Balto-Slavic could never have been contiguous Indo-European dialects. According to him, the earliest contacts between Germanic and Baltic-Slavic speakers must date to the early Middle Ages, and Germanic loanwords in Baltic must have passed through a Slavic intermediary. Some religious materials have been found to be shared between Germanic, Slavic and Celtic. For instance, the Proto-Germanic word for
werewolf (
*wira-wulfaz, 'man-wolf') appears to be semantically related to the
Proto-Slavic and
Proto-Celtic equivalents *
vьlko-dlakь ('wolf-haired') and *
wiro-kū ('man-dog'), respectively. The motif of the
Wild Hunt is also shared amongst the Germans, Celts, and Slavs.
Shared lexicon == See also ==